Relevant bibliographies by topics / Spin polarized electron energy spectrometer

Academic literature on the topic 'Spin polarized electron energy spectrometer'

Author: Grafiati
Published: 4 June 2021
Last updated: 20 February 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Contents

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Spin polarized electron energy spectrometer.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Spin polarized electron energy spectrometer"

1

Ibach, H., D. Bruchmann, R. Vollmer, M. Etzkorn, P. S. Anil Kumar, and J. Kirschner. "A novel spectrometer for spin-polarized electron energy-loss spectroscopy." Review of Scientific Instruments 74, no. 9 (September 2003): 4089–95. http://dx.doi.org/10.1063/1.1597954.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

MEZIANI, ZEIN-EDDINE. "NUCLEON SPIN PHYSICS USING CEBAF AT 11 GeV." International Journal of Modern Physics A 18, no. 08 (March 30, 2003): 1281–88. http://dx.doi.org/10.1142/s0217751x03014617.

Full text
Abstract:
We disscuss key experiments that address some of the nucleon spin physics questions as part of the 12 GeV planning for the energy upgrade of the Continuous Electron Beam Accelerator Facility (CEBAF) at Jefferson Lab. These experiments take advantage of a highly polarized beam and the availability of polarized target namely 3 He combined with a Medium Acceptance Spectrometer (MAD) in Hall A.
APA, Harvard, Vancouver, ISO, and other styles
3

SHIBATA, TOSHI-AKI. "SPIN STRUCTURE OF THE NUCLEON STUDIED BY HERMES." International Journal of Modern Physics A 18, no. 08 (March 30, 2003): 1161–68. http://dx.doi.org/10.1142/s0217751x03014472.

Full text
Abstract:
The spin structure of the proton and neutron is studied by polarized deep inelastic scattering at HERMES. The longitudinally polarized electron beam at 27.6 GeV, polarized internal gas targets of 3 He , H and D, and a wide acceptance magnetic spectrometer with a particle identification capability are the important ingredients of the experiment. The basic concepts of the measurements at HERMES as well as recent physics results are presented.
APA, Harvard, Vancouver, ISO, and other styles
4

AUGUSTYNIAK, WITOLD. "SINGLE-SPIN AZIMUTHAL ASYMMETRY IN EXCLUSIVE ELECTROPRODUCTION OF ɸ AND ω VECTOR MESONS ON TRANSVERSELY POLARIZED PROTONS." International Journal of Modern Physics A 26, no. 03n04 (February 10, 2011): 763–65. http://dx.doi.org/10.1142/s0217751x11052773.

Full text
Abstract:
The hard exclusive electro-production of ɸ and ω vector mesons was studied with the HERMES spectrometer at the DESY laboratory by scattering 27.6 GeV positron and electron beams off a transversely polarized hydrogen target. The single-spin azimuthal asymmetry with respect to the transverse proton polarization was measured.
APA, Harvard, Vancouver, ISO, and other styles
5

GAO, HAIYAN. "NEW RESULTS FROM THE BATES LARGE ACCEPTANCE SPECTROMETER TOROID (BLAST)." International Journal of Modern Physics E 18, no. 02 (February 2009): 209–19. http://dx.doi.org/10.1142/s0218301309012227.

Full text
Abstract:
An experiment using the novel technique of scattering a longitudinally polarized electron beam from polarized internal hydrogen/deuterium gas targets was carried out in the South Hall Ring at the MIT-Bates Accelerator Center. The scattered particles were detected by the Bates Large Acceptance Spectrometer Toroid (BLAST) detector. The proton electric to magnetic form factor ratio, [Formula: see text] at Q 2 = 0.1 - 0.65 ( GeV/c )2 has been determined from the experiment by measuring the spin-dependent ep elastic scattering asymmetry in the two symmetric sectors of the BLAST simultaneously for the first time. The neutron electric form factor [Formula: see text] in the same Q2 range has been extracted by measuring the spin-dependent asymmetry from the [Formula: see text] process with a vector polarized deuterium target. These results on the nucleon form factors from the BLAST experiment are presented.
APA, Harvard, Vancouver, ISO, and other styles
6

GRIFFIOEN, KEITH. "DOUBLE SPIN ASYMMETRIES AND NUCLEON STRUCTURE AT CLAS." International Journal of Modern Physics A 18, no. 08 (March 30, 2003): 1177–84. http://dx.doi.org/10.1142/s0217751x03014496.

Full text
Abstract:
Inclusive and exclusive double spin asymmetries have been measured in Hall B at Jefferson Lab using the CLAS spectrometer. The data cover the resonance region for 0.15 < Q2 < 1.5 GeV 2. They were taken using longitudinally polarized electron beams of 2.6 and 4.3 GeV and longitudinally polarized 15 NH 3 and 15 ND 3 targets. The data provide information on the helicity amplitudes of specific resonances as well as on the Q2-evolution of the generalized Gerasimov-Drell-Hearn Sum Rule.
APA, Harvard, Vancouver, ISO, and other styles
7

Vasilyev, D., and J. Kirschner. "Design and performance of a spin-polarized electron energy loss spectrometer with high momentum resolution." Review of Scientific Instruments 87, no. 8 (August 2016): 083902. http://dx.doi.org/10.1063/1.4961471.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

CHEN, JIAN-PING. "EXPERIMENTAL STUDY OF SINGLE SPIN ASYMMETRIES AND TMDs." International Journal of Modern Physics: Conference Series 25 (January 2014): 1460021. http://dx.doi.org/10.1142/s2010194514600210.

Full text
Abstract:
Single Spin Asymmetries and Transverse Momentum Dependent (TMD) distribution study has been one of the main focuses of hadron physics in recent years. The initial exploratory Semi-Inclusive Deep-Inelastic-Scattering (SIDIS) experiments with transversely polarized proton and deuteron targets from HERMES and COMPASS attracted great attention and lead to very active efforts in both experiments and theory. A SIDIS experiment on the neutron with a polarized 3 He target was performed at JLab. Recently published results as well as new preliminary results are shown. Precision TMD experiments are planned at JLab after the 12 GeV energy upgrade. Three approved experiments with a new SoLID spectrometer on both the proton and neutron will provide high precision TMD data in the valence quark region. In the long-term future, an Electron-Ion Collider (EIC) as proposed in US (MEIC@JLab and E-RHIC@BNL) will provide precision TMD data of the gluons and the sea. A new opportunity just emerged in China that a low-energy EIC (1st stage EIC@HIAF) may provide precision TMD data in the sea quark region, complementary to the proposed EIC in US.
APA, Harvard, Vancouver, ISO, and other styles
9

Ahuja, Babu Lal, Ashish Rathor, Vinit Sharma, Yamini Sharma, Ashvin Ramniklal Jani, and Balkrishna Sharma. "Electronic Structure and Compton Profiles of Tungsten." Zeitschrift für Naturforschung A 63, no. 10-11 (November 1, 2008): 703–11. http://dx.doi.org/10.1515/zna-2008-10-1114.

Full text
Abstract:
The energy bands, density of states and Compton profiles of tungsten have been computed using band structure methods, namely the spin-polarized relativistic Korringa-Kohn-Rostoker (SPR-KKR) approach as well as the linear combination of atomic orbitals with Hartree-Fock scheme and density functional theory. The full potential linearized augmented plane wave scheme to calculate these properties and the Fermi surface topology (except the momentum densities) have also been used to analyze the theoretical data on the electron momentum densities. The directional Compton profiles have been measured using a 100 mCi 241Am Compton spectrometer. From the comparison, the measured anisotropies are found to be in good agreement with the SPR-KKR calculations. The band structure calculations are also compared with the available data.
APA, Harvard, Vancouver, ISO, and other styles
10

Abd-Rahman, M. Kamil, N. F. M. Suhaimi, Evy Evana Edwin, Winnie Dian, and Nur Hanis Abdul Halim. "Optical Characteristics of Erbium-Doped SiO2/PVA Electrospun Nanofibers." Advanced Materials Research 1108 (June 2015): 59–66. http://dx.doi.org/10.4028/www.scientific.net/amr.1108.59.

Full text
Abstract:
This paper reports on the fabrication and optical characteristics of erbium-doped silica/PVA nanofibers via sol gel and electrospinning techniques. Silica glass, PVA (polyvinyl alcohol) and SiO2/PVA composites displayed 85% to 90% transparent across 300 2000 nm wavelength range. The transmission spectra were measured using Cary 5000 UV-Vis-NIR spectrophotometer. Silica was synthesized using TEOS (tetraethylorthosilicate) as the precursor, while PVA solution comprised of 7.0 wt% in H2O. The compositional ratios of SiO2:PVA were from 6:4 to 1:9 and were doped with 0.2% to 0.6% of erbium. Suitable viscosities of Er3+-doped SiO2:PVA solutions were electrospun into mesh of long strands nanofibers. Morphological and material compositions in the nanofibers were analysed using FESEM (field-emission scanning electron microscopy) and EDX (energy-dispersive X-ray spectroscopy). Er3+-doped SiO2:PVA thin films were coated on fused-silica glass substrates via spin coating and were characterized for their refractive indices, optical transmission, and fluorescence using M-line technique, UV-Vis-NIR spectrometer and photoluminescence spectrophotometer, respectively. Lower ratios of silica to PVA solutions results in higher viscosities and produced more uniform nanofiber structures of diameters around 100 nm with lesser beads. The refractive index of 1.61 for Er-doped SiO2:PVA (1:9) thin film was measured with TE polarized 632.8 nm wavelength laser and the index shows to be higher for more content of PVA in the glass/polymer composites. The 0.4% of Er3+ in SiO2:PVA composite produced the highest luminescence intensity at 605 nm when excited with 514 nm source. Higher doping content caused ion clustering effect and leads to concentration quenching, hence decreased in the emission intensity.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Spin polarized electron energy spectrometer"

1

Went, Michael Ray, and n/a. "Scattering of Spin Polarized Electrons from Heavy Atoms: Krypton and Rubidium." Griffith University. School of Science, 2003. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20040220.134142.

Full text
Abstract:
This thesis presents a set of measurements of spin asymmetries from the heavy atoms krypton and rubidium. These investigations allow examination of the spin orbit interaction for electron scattering from the target atoms. These measurements utilise spin polarized electrons in a crossed beam experiment to measure the Sherman function from krypton and the A2 parameter from the 52P state of rubidium. The measurements utilise a new spin polarized electron energy spectrometer which is designed to operate in the 20-200 eV range. The apparatus consists of a standard gallium arsenide polarized electron source, a 180 degrees hemispherical electron analyser to detect scattered electrons and a Mott detector to measure electron polarization. A series of measurements of the elastic Sherman function were performed on krypton at incident electron energies of 20, 50, 60, 65, 100, 150 and 200 eV. Scattered electrons are measured over an angular range of 30-130 degrees. These measurements are compared with calculations of the Sherman function which are obtained by solution of the Dirac-Fock equations. These calculations include potentials to account for dynamic polarization and loss of flux into inelastic channels. At the energies 50, 60 and 65 eV, experimental agreement with theory is seen to be extremely dependent on the theoretical model used. Measurement of the A2 parameter from the combined 52P1/2,3/2 state of rubidium are performed at an incident energy of 20 eV. The scattered electrons are measured over an angular range of 30-110 degrees. This measurement represents the first such measurement of this parameter for rubidium. Agreement with preliminary calculations performed using the R-matrix technique are good and are expected to improve with further theoretical development.
APA, Harvard, Vancouver, ISO, and other styles
2

Went, Michael Ray. "Scattering of Spin Polarized Electrons from Heavy Atoms: Krypton and Rubidium." Thesis, Griffith University, 2003. http://hdl.handle.net/10072/365606.

Full text
Abstract:
This thesis presents a set of measurements of spin asymmetries from the heavy atoms krypton and rubidium. These investigations allow examination of the spin orbit interaction for electron scattering from the target atoms. These measurements utilise spin polarized electrons in a crossed beam experiment to measure the Sherman function from krypton and the A2 parameter from the 52P state of rubidium. The measurements utilise a new spin polarized electron energy spectrometer which is designed to operate in the 20-200 eV range. The apparatus consists of a standard gallium arsenide polarized electron source, a 180 degrees hemispherical electron analyser to detect scattered electrons and a Mott detector to measure electron polarization. A series of measurements of the elastic Sherman function were performed on krypton at incident electron energies of 20, 50, 60, 65, 100, 150 and 200 eV. Scattered electrons are measured over an angular range of 30-130 degrees. These measurements are compared with calculations of the Sherman function which are obtained by solution of the Dirac-Fock equations. These calculations include potentials to account for dynamic polarization and loss of flux into inelastic channels. At the energies 50, 60 and 65 eV, experimental agreement with theory is seen to be extremely dependent on the theoretical model used. Measurement of the A2 parameter from the combined 52P1/2,3/2 state of rubidium are performed at an incident energy of 20 eV. The scattered electrons are measured over an angular range of 30-110 degrees. This measurement represents the first such measurement of this parameter for rubidium. Agreement with preliminary calculations performed using the R-matrix technique are good and are expected to improve with further theoretical development.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Science
Full Text
APA, Harvard, Vancouver, ISO, and other styles
3

Mulhollan, Gregory Anthony. "Surface studies using spin-polarized electron energy loss spectroscopy." Thesis, 1990. http://hdl.handle.net/1911/16376.

Full text
Abstract:
Spin-polarized electron energy loss spectroscopy (SPEELS) has been used to investigate several paramagnetic surfaces. In this technique, a low energy beam of spin-polarized electrons from a GaAs source is directed at the surface to be studied and the spin-polarization of the emitted electrons, as well as the kinetic energy distribution, is measured via a micro-Mott polarimeter equipped with a retarding potential energy analyzer. The near-elastic-energy electrons contain information on the inelastic scattering channels available in the solid. The spin-polarization of these same electrons is sensitive to the shape of the final state manifold, i.e., the density of unoccupied states. The low energy and behavior of the spin-polarization spectrum mainly reflects the high number of unpolarized electrons present near zero kinetic energy. Results from Cu(100), polycrystalline Au, GaAs(110), GaAs(100) and Mo(110) surfaces suggest that exchange scattering with spin-flip is ubiquitous for the lowest energy electron beam energies studied ($\sim$14 eV). A simple convolution of the empty and occupied densities of states correctly predicts the shape of the energy dependent spin-flip rate.
APA, Harvard, Vancouver, ISO, and other styles
4

MULHOLLAN, GREGORY ANTHONY. "A SPIN-POLARIZED LOW-ENERGY ELECTRON DIFFRACTION STUDY OF A MAGNETIZED NICKEL(111) SURFACE." Thesis, 1987. http://hdl.handle.net/1911/13244.

Full text
Abstract:
Spin-polarized low energy electrons from a GaAs source were used to probe magnetized nickel(111) surface. Intensity curves as well as spin-orbit and exchange induced polarization asymmetries were obtained for the $(00)-20\sp\circ, (00)-30\sp\circ,$ $(00)-45\sp\circ, (10)$ and $(-10)$ beams. Comparison with a preliminary theoretical study yields no quantitative information on the magnetic moment per surface atom.
APA, Harvard, Vancouver, ISO, and other styles
5

Lancaster, James Campbell. "A low-energy, electron-spin-polarized helium(+) ion source for use in surface studies." Thesis, 1998. http://hdl.handle.net/1911/17237.

Full text
Abstract:
A spin polarized He$\sp+$ ion source has been developed to study the dynamics of ion-surface interactions. The He$\sp+$ ions are produced by Penning ionization in collisions between electron-spin-polarized He(2$\sp3$S) metastable atoms contained in a weak rf-excited discharge. The ions are extracted from the discharge and focused onto clean or adsorbate-covered surfaces using a series of electrostatic lenses. The impact energy can be varied from $\rm{<}10eV$ to $\rm{\ge}650eV$ and typical beam polarizations are 10-15%. Information about ion/surface interactions, and the dependence of those interactions on the incident ion energy, is obtained by measuring the energy distribution and polarization of electrons ejected from the surface as a result of Auger neutralization.
APA, Harvard, Vancouver, ISO, and other styles
6

Etzkorn, Markus [Verfasser]. "Spin waves with high energy and momentum in ultrathin Co-films studied by spin polarized electron energy loss spectroscopy / von Markus Etzkorn." 2005. http://d-nb.info/978636392/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Pradeep, A. V. "Development of a Spin-Polarized Low Energy Electron Diffraction System and Investigation on Spin-Orbit and Exchange Interactions on Ir(100) and Ultrathin Fe(100) Grown on Ir(100)." Thesis, 2016. http://hdl.handle.net/2005/3202.

Full text
Abstract:
Spin-polarized electron beam has not yet been produced from an unpolarized electron beam using Stern-Gerlach type spin filter, because of the Lorentz force and Heisenberg uncertainty principle. At present, electron spin detectors and filters work on the basis of spin-dependent scattering of an electron beam from crystal surfaces. Single channel efficiencies of all the spin detectors for electrons are orders of magnitudes lower than the ideal one. Specular reflection type spin-polarized low energy electron diffraction (SPLEED)-spin detectors are having higher single channel efficiencies compared to the conventional Mott detectors. Moreover, multichannel detection can be realized from specular reflection type SPLEED-spin detectors. They have higher effective efficiency than the ideal spin detector. In order to develop specular reflection type spin filter, it is important to develop a spin-polarized low energy electron diffraction system. In addition, SPLEED system allows us to study the spin-orbit and exchange scattering at crystal surfaces. The general direction of the thesis has been the development of spin-polarized low energy electron diffraction (SPLEED) system. This system has been used to investigate the spin-orbit interactions on Ir(100) surface and exchange interactions of Fe grown on Ir(100). The thesis is organized into chapters as follows. Chapter 1 introduce the reader to some of the basic concepts of polarized electrons and the evolution of spin-polarized electron sources and detectors. Sources of polarized electrons are discussed with emphasis on photocathodes such as GaAs and strained GaAs. Widely used spin detector is the Mott detector which works in the higher energy range. The working principle of the Mott detector is discussed. Commonly used spin detector in the lower energy range is the LEED detector. The concept of the LEED detector is also discussed. Working principle and recent developments of specular reflection type SPLEED spin filters are introduced. Evolution of electron spin detector is discussed towards the end of the chapter. Chapter 2 discusses about the two instruments designed and developed during the course of the thesis. The first one is a spin-polarized low energy electron diffraction system working in the reflected electron pulse counting mode in UHV. This system is capable of measuring spin asymmetries due to spin-orbit interaction and exchange interaction. This instrument is useful in understanding structure and magnetism at surfaces as well as helps to develop new spin polarimeter based on SPLEED by evaluating spin asymmetries from different surfaces. All instruments connected to SPLEED system, measurement protocol and controlling software are discussed with some details. Along with this, standard characterization tools such as X-ray diffraction and magneto-optic Kerr effect measurements are discussed. The second instrument is a novel quadratic magneto-optic Kerr effect measurement system using permanent magnets, which is simple, compact and cost-effective. We have used rotating field method to extract QMOKE component in saturation. So there is no need for precise real-time measurement of magnitude and direction of the magnetic field as in the case of vector magnet. This instrument can easily quantify QMOKE coefficients for ferrimagnetic and ferromagnetic thin films and single crystals. Chapter 3 discusses SPLEED experiments carried out on Ir(100)-(1×5)-Hex and Ir(100)-(1×2+2×1)-O surfaces. The surface structure and surface preparation techniques are discussed. The stability of the Ir(100)-(1×5)-Hex surface is evaluated by monitoring the spin asymmetry as the function of time. Within 25 hours after the surface preparation, the profile of the spin asymmetry and the reflected electron count for Ir(100)-(1×5)-Hex surface resembles that of hydrogen adsorbed Ir(100)-(1×5)-H surface. The electron energy-angle of incidence landscape of reflectivity, spin asymmetry and figure of merit are recorded for Ir(100)-(1×2+2×1)-O surface. Many wide regions with a large figure of merit are identified in the E- landscape. Chapter 4 reports SPLEED experiments carried out on Ir(100)-(1×5)-H surface. The comparison between asymmetries evaluated for the Ir(100)-(1×5)-Hex surface after 25 hours and Ir(100)-(1×5)-H surface suggests that Ir(100)-(1×5)-Hex surface is transforming to Ir(100)-(1×5)-H surface, in 25 hours. This can be due to the adsorption of more than four Langmuir of residual hydrogen during this time. The energy-angle landscape of reflectivity, asymmetry and figure of merit are recorded for Ir(100)-(1×5)-H surface in an energy range 20 eV to 100 eV and angle range 10 to 60 . Many regions are identified as the working point for specular reflection type spin filter based on SPLEED. The surface structure and surface preparation techniques are discussed. The stability of the surface is also evaluated. Chapter 5 investigates the growth and magnetic properties of Fe(100) film on Ir(100)-(1×1), Ir(100)-(1×5)-Hex and Ir(100)-(1×2+2×1)-O surfaces. LEED, MEED, LMOKE and QMOKE studies were presented. The growth is found to be layer-by-layer at least up to 20 monolayers (ML) at room temperature. At higher deposition temperature, the MEED oscillations disappear around 3-5 ML. Magnetic anisotropy of the Fe(100) film grown on Ir(100)-(1×2+2×1)-O surfaces is evaluated using LMOKE measurement using Kerr microscope. Simultaneous in-situ LMOKE and MEED measurements were carried out during the deposition. Ferromagnetic ordering with an in-plane easy axis starts above 4.5 ML at room temperature. The Kerr rotation normalized by thickness is evaluated in the pseudomorphic regime and strain relaxed regime. The probing depth of the MOKE is found to be around 14 nm in Fe(100)/Ir(100). An antisymmetric component is observed in the re-magnetization loop measured using MOKE. This antisymmetric loop arises due to the quadratic magneto-optic coupling which is separated by symmetrization and antisymmetrization procedure. The observed quadratic magneto-optic coupling suggests that the analysis based on the assumption that the magneto-optic coupling is linear in magnetization has to be modified. In order to quantify the quadratic magneto-optic coupling parameters, a QMOKE measurement system is developed and measurements were carried out. Chapter 6 discusses SPLEED experiments carried out on various thicknesses of Fe(100) film. Fe(100) films grown on Ir(100) substrate with the thickness less than or equal to 4 ML is not ferromagnetic with in-plane easy axis at room temperature. The non-zero exchange asymmetry observed for 5 ML and above indicates the presence of ferromagnetic ordering. A difference in the profile of exchange asymmetry is observed between pseudomorphic and strain relaxed regime. Large spin-orbit asymmetry is observed for 1 ML and 2 ML Fe(100) which is unexpected from a low atomic number (Z) material. The reason for large spin-orbit asymmetry is still unknown. The energy-angle landscape of reflectivity, exchange asymmetry, spin-orbit asymmetry and figure of merit were evaluated for 21 ML of Fe(100). Many working points were identified for different types multichannel spin filter based on exchange interaction Finally, the various results are summarized and a broad outlook is given.
APA, Harvard, Vancouver, ISO, and other styles
8

Magugumela, Maurice Todani. "Design and testing of a low-energy spin-polarized electron gun and its application to SPEELS." Thesis, 1994. http://hdl.handle.net/1911/13864.

Full text
Abstract:
A spin-polarized low-energy electron gun with high current transmission is described here and has been applied to SPEELS studies. Current transmission in excess of 40% is routinely achieved. This is a dramatic improvement compared with the $\sim$1% transmission obtained using an earlier electron gun. The high current transmission has allowed SPEELS studies of energy loss mechanisms in low-energy electron scattering from atomically clean metallic surfaces. There are two dominant energy loss mechanisms: dipole scattering which occurs in the vacuum outside the target and impact scattering via electron-hole pair excitation occurring inside the target surface. Preliminary results of SPEELS experiments on Cu(100) and Ag(100) surfaces and on thin films of Mo, Co, and Fe epitaxially grown on a Cu(100) are presented.
APA, Harvard, Vancouver, ISO, and other styles
9

LIND, DAVID MELVIN. "STUDIES OF SURFACE GEOMETRIC AND MAGNETIC STRUCTURE UTILIZING SPIN-POLARIZED LOW-ENERGY ELECTRON DIFFRACTION: COPPER(001) AND NICKEL(111)." Thesis, 1987. http://hdl.handle.net/1911/16087.

Full text
Abstract:
Presented here are experimental/theoretical studies of the geometric structure of a Cu(001) surface and the near-surface layer magnetization of a ferromagnetic Ni(111) surface, both using spin-polarized low energy electron diffraction (SPLEED). This probe shows great promise both as a high quality structural probe, and also in a variety of magnetic studies. Significant advances have been made over the past several years in both experimental and calculational LEED techniques. The introduction r-factor analysis and streamlining of calculational codes now allows the evaluation of increasingly complex structures by LEED I-V analysis. In addition, experimental advances now allow the investigation of not only the intensities, but also the spin-dependence of scattering from many surfaces. Spin dependence in low-energy electron diffraction is found for scattering from all surfaces, and is due to two effects--the spin-orbit interaction and the exchange interaction. The former is sensitive to the positioning of ions that make up the surface and provides complementary probe of surface geometric structure in addition to LEED intensity analysis. Here we introduce a simple r-factor analysis to evaluate the structure of Cu(001). This surface was chosen because it is well studied, and a highly precise structural determination of the surface based on LEED I-V analysis is available for comparison. Experimental SPLEED A-V profiles are compared with calculated profiles to obtain the best near-surface structure. In this study, the comparison between calculated and experimental spin-asymmetry profiles obtained from this surface is unusually good, and further, the best fit is for a structure that agrees well with the previous LEED study. The present study is the first use of r-factor in a SPLEED structural determinations. Several things are readily noted from the present SPLEED r-factor analysis. First the precision of structural conclusions obtainable r-factors is much greater than possible using the visual inspection method found elsewhere. Further, because A-V's are self-normalizing, the r-factors are cleaner, requiring no arbitrary scaling factor. Also the spin asymmetries show more sensitivity to structural variations than do the comparable LEED intensities. The exchange interaction is sensitive to the electron spin-population density in the surface, an thus to surface magnetism. Our preliminary study of the ferromagnetic Ni(111) surface shows very small exchange asymmetry effects. The results are consistent with some enhancement of the sample magnetization at the surface, but a precise layer magnetization determination is beyond the limits of present technique.
APA, Harvard, Vancouver, ISO, and other styles
10

Zhang, Yu [Verfasser]. "High wave vector spin waves in ultrathin Fe films on W(110) studied by spin polarized electron energy loss spectroscopy / vorgelegt von Yu Zhang." 2009. http://d-nb.info/996168133/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Spin polarized electron energy spectrometer"

1

Fromme, Bärbel. D-D Excitations in Transition-Metal Oxides: A Spin-Polarized Electron Energy-Loss Spectroscopy Study. Springer, 2007.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

(Editor), Yousef I. Makdisi, Alfredo U. Luccio (Editor), and William W. MacKay (Editor), eds. SPIN 2002: 15th International Spin Physics Symposium and Workshop on Polarized Electron Sources and Polarimeters, Upton, NY, 9-14 September 2002 (AIP Conference Proceedings / High Energy Physics). American Institute of Physics, 2003.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

d-d Excitations in Transition-Metal Oxides: A Spin-Polarized Electron Energy-Loss Spectroscopy (SPEELS) Study (Springer Tracts in Modern Physics). Springer, 2001.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Hirohata, A., and J. Y. Kim. Optically Induced and Detected Spin Current. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198787075.003.0006.

Full text
Abstract:
This chapter presents an alternative method of injecting spin-polarized electrons into a nonmagnetic semiconductor through photoexcitation. This method uses circularly-polarized light, whose energy needs to be the same as, or slightly larger than, the semiconductor band-gap, to excite spin-polarized electrons. This process will introduce a spin-polarized electron-hole pair, which can be detected as electrical signals. Such an optically induced spin-polarized current can only be generated in a direct band-gap semiconductor due to the selection rule described in the following sections. This introduction of circularly polarized light can also be used for spin-polarized scanning tunnelling microscopy.
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Spin polarized electron energy spectrometer"

1

Clendenin, J. E. "The SLC Polarized Electron Source." In High Energy Spin Physics, 3–7. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76661-9_1.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Essabaa, S., C. G. Aminoff, J. Arianer, and I. Brissaud. "The Orsay Polarized Electron Source." In High Energy Spin Physics, 8–11. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76661-9_2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Bauer, Ernst. "Spin-Polarized Low-Energy Electron Microscopy." In Handbook of Nanoscopy, 697–707. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2012. http://dx.doi.org/10.1002/9783527641864.ch20.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Agranovich, V. L., A. V. Glamazdin, V. G. Gorbenko, A. P. Prudius, and P. V. Sorokin. "Status of the Kharkov Linac Polarized Electron Source." In High Energy Spin Physics, 17–19. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76661-9_4.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Reichert, E. "Summary Report of the Workshop on Polarized Electron Sources and Electron Spin Polarimeters." In High Energy Spin Physics, 303–17. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-86995-2_27.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Althoff, K. H., B. Boden, V. Burkert, R. Dostert, T. Hewel, O. Kaul, G. Knop, et al. "Elastic Electron Deuteron Scattering on a Tensor Polarized Solid ND3 Target." In High Energy Spin Physics, 550–57. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-86995-2_69.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Nakanishi, T., and S. Nakamura. "Development of Polarized Electron Source of GaAs-AlGaAs Superlattice and Strained GaAs." In High Energy Spin Physics, 30–34. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-76661-9_7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Minty, Michiko G., and Frank Zimmermann. "Polarization Issues." In Particle Acceleration and Detection, 239–62. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-662-08581-3_10.

Full text
Abstract:
AbstractThe study of spin dynamics in synchrotrons has evolved over the years as has the desire for achieving polarized particle beams of the highest possible beam energies. A selection of reviews of the dynamics of polarized beams may be found in [1]–[9]. In this chapter, we focus on experimental data and describe spin transport in circular accelerators and transport lines. Except where explicitly mentioned, radiative effects in electron accelerators or very high energy proton accelerators are not treated here. We begin with a review of the Thomas-BMT equation for spin motion. This will be given in terms of the SU(2) spinor representation. Spinor algebra will be introduced and applied in the description of techniques used for preserving the beam polarization during acceleration through depolarizing resonances at moderate beam energies.
APA, Harvard, Vancouver, ISO, and other styles
9

Gradmann, U., and S. F. Alvarado. "Elastic Spin-Polarized Low-Energy Electron Scattering from Magnetic Surfaces." In Polarized Electrons in Surface Physics, 321–52. WORLD SCIENTIFIC, 1986. http://dx.doi.org/10.1142/9789814415262_0007.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Dunning, F. B., and G. K. Walters. "Elastic Spin-Polarized Low Energy Electron Diffraction from Non-Magnetic Surfaces." In Polarized Electrons in Surface Physics, 287–320. WORLD SCIENTIFIC, 1986. http://dx.doi.org/10.1142/9789814415262_0006.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Spin polarized electron energy spectrometer"

1

Schröter, C. D. "A Novel Imaging Spectrometer for Energy-Distribution Measurements of Photoelectrons from GaAs Cathodes." In SPIN 2002: 15th International Spin Physics Symposium and Workshop on Polarized Electron Sources and Polarimeters. AIP, 2003. http://dx.doi.org/10.1063/1.1607287.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Sinclair, C. K. "Report on polarized electron source and electron polarimetry workshop." In International symposium on high−energy spin physics. AIP, 1989. http://dx.doi.org/10.1063/1.38367.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Bauer, Ernst. "Polarized electrons in low energy electron microscopy." In The fourteenth international spin physics symposium, SPIN2000. AIP, 2001. http://dx.doi.org/10.1063/1.1384234.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Cohen, S., J. Arianer, S. Essabaa, R. Frascaria, and O. Zerhouni. "Latest results of the Orsay polarized electron source." In The 11th International symposium on high energy spin physics. AIP, 1995. http://dx.doi.org/10.1063/1.48890.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Atwood, W. B. "B meson physics with polarized electron beams at the SLC." In HIGH−ENERGY SPIN PHYSICS/EIGHTH INTERNATIONAL SYMPOSIUM. AIP, 1989. http://dx.doi.org/10.1063/1.38273.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Mishnev, S. I., D. M. Nikolenko, S. G. Popov, I. A. Richek, A. B. Temnykh, D. K. Toporkov, E. P. Tsentalovich, et al. "Polarized deuteron target in an electron storage ring: Measurements and perspectives." In International symposium on high−energy spin physics. AIP, 1989. http://dx.doi.org/10.1063/1.38352.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Sivers, Dennis. "Macroscopic Quantum Processors Based on Stored High-Energy Polarized Beams." In SPIN 2002: 15th International Spin Physics Symposium and Workshop on Polarized Electron Sources and Polarimeters. AIP, 2003. http://dx.doi.org/10.1063/1.1607243.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Kaur, Kulveer, Akariti Sharma, Vinayak Garg, and R. K. Moudgil. "Free correlation energy of unpolarized and fully spin-polarized electron quantum wire." In DAE SOLID STATE PHYSICS SYMPOSIUM 2019. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0016689.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

WILLIAMS, J. F., S. N. SAMARIN, A. D. SERGEANT, A. A. SUVOROVA, and O. M. ARTAMONOV. "LOW ENERGY SPIN-POLARIZED ELECTRON-PAIR (e,2e)-IN-REFLECTION FROM VARIOUS SURFACES." In Proceedings of the XXIV International Conference. WORLD SCIENTIFIC, 2006. http://dx.doi.org/10.1142/9789812772442_0086.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Di Salvo, E. "Role of T-odd Functions in High Energy Hadronic Collisions." In SPIN 2002: 15th International Spin Physics Symposium and Workshop on Polarized Electron Sources and Polarimeters. AIP, 2003. http://dx.doi.org/10.1063/1.1607185.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Spin polarized electron energy spectrometer"

1

Waddill, G. D., and R. F. Willis. A revolutionary rotatable electron energy analyzer for advanced high-resolution spin-polarized photoemission studies. Final Report. Office of Scientific and Technical Information (OSTI), October 1999. http://dx.doi.org/10.2172/821139.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Spin polarized electron energy spectrometer' for particular source types:
Journal articles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography