Tesi sul tema "Magnetotransport"
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Mennicke, Ralph T. "Sensing magnetotransport". Thesis, University of York, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.441021.
Testo completoRich, Thalia L. "Magnetotransport in electron waveguides". Thesis, Massachusetts Institute of Technology, 1994. http://hdl.handle.net/1721.1/36433.
Testo completoNam, Moon-Sun. "Magnetotransport in BEDT-TTF salts". Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.342589.
Testo completoSnell, B. R. "Magnetotransport in short semiconductor structures". Thesis, University of Nottingham, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380110.
Testo completoMoseley, Dominic. "Magnetotransport experiments in the ferropnictides". Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/24798.
Testo completoPaudel, Bhim L. "Magnetotransport in GaMnAs Based Microstructures". Miami University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=miami1331927548.
Testo completoHapke-Wurst, Isabella. "Resonanter Magnetotransport durch selbstorganisierte InAs-Quantenpunkte". [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=965263339.
Testo completoBoye, Shawn Alexander. "Magnetotransport Measurements of Ni Thin Films". Doctoral thesis, Uppsala University, Department of Earth Sciences, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-4653.
Testo completoThis thesis presents transverse magnetoresistance (MR) and Hall resistivity measurements of nickel thin films at temperatures between 280 and 455 K and pressures up to 6 GPa. An experimental system was developed for conducting precise magnetotransport measurements using the current reversal and van der Pauw techniques in combination with a 10 T superconducting magnet. Polycrystalline Ni0.985O0.015 thin film samples were manufactured with preexisting point contacts allowing highly reproducible magnetotransport measurements at pressure in the diamond anvil cell (DAC).
The magnetic resistivity above the technical saturation of the magnetization was found to decrease linearly to the highest applied fields, 10 T, while the field derivative, 0.010-0.018 µΩ cm T-1 between 280 and 316 K, increased with temperature and decreased with pressure. The decrease in the magnetoresistance is attributed to spin wave damping of electron-magnon scattering processes at high fields. The magnon mass, 535(14) meV Å2 at 0 K and 0 GPa, determined from longitudinal magnetic resistivity theory is a slightly increasing function of pressure. Correlation between the zero field resistivity and the extraordinary Hall coefficient (EHC) confirmed side jump scattering as the dominant diffusion mechanism at 0 GPa, however, skew scattering was found to become increasingly important with pressure.
The effect of oxygen and pressure on the density of states (DOS) at the Fermi level was investigated through total energy band structure calculations using a periodic supercell of 64 atoms to simulate the sample chemistry. The DOS of Ni0.985O0.015 at the Fermi level was found to increase by 27% at 10 GPa relative to 0 GPa. However, when compared to the results for pure Ni, decreases of 60% and 23% occurred for the corresponding calculations at 0 and 10 GPa. The relative differences in the magnetic resistivity are attributed to competing effects between the DOS, average magnetic moment and magnon mass.
The technique developed for conducting magnetotransport measurements at pressure is applicable to the study of electronic diffusion in ferromagnets as well as geophysical problems such as the geodynamo.
Walter, Theresia. "Struktur und Magnetotransport laserdeponierter Lanthanmanganat Dünnschichtsysteme". Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2004. http://nbn-resolving.de/urn:nbn:de:swb:14-1091095462390-98045.
Testo completoKim, Gil-Ho. "Magnetotransport in low dimensional semiconductor structures". Thesis, University of Cambridge, 1998. https://www.repository.cam.ac.uk/handle/1810/244953.
Testo completoGoddard, Paul. "Magnetotransport studies of layered metallic systems". Thesis, University of Oxford, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.275491.
Testo completoMartin, Robert W. "Quantum magnetotransport in strained layer heterostructures". Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.315751.
Testo completoDeacon, Russell. "Magnetotransport studies of InAs/GaSb superlattices". Thesis, University of Oxford, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.427872.
Testo completoGreene, Simon Kenneth. "Magnetotransport effects in low dimensional semiconductors". Thesis, University of Cambridge, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358645.
Testo completoWalter, Theresia. "Struktur und Magnetotransport laserdeponierter Lanthanmanganat Dünnschichtsysteme". Doctoral thesis, Technische Universität Dresden, 2003. https://tud.qucosa.de/id/qucosa%3A24356.
Testo completoChandra, Nikhil. "Der Einfluss der Randstreuung auf ballistischen Magnetotransport". Diss., lmu, 2000. http://nbn-resolving.de/urn:nbn:de:bvb:19-2147.
Testo completoDuijn, Henricus Gerardus Maria. "Magnetotransport and magnetocaloric effects in intermetallic compounds". [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2000. http://dare.uva.nl/document/83091.
Testo completoFreitag, James M. (James Mac). "Structural and magnetotransport properties of nickelcobalt multilayers". Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=24003.
Testo completoStructural characterization by grazing-angle X-ray reflectivity reveals high-quality layered structures with a well-defined composition modulation along the film growth direction. Wide-angle X-ray diffraction scans display the polycrystalline nature of the Ni/Co multilayers which grow in an FCC phase with a preferred (111) orientation and a fraction of (200) structural domains.
Measurements of the magnetotransport properties of these multilayers indicate that the magnetoresistance (MR) effect, $ Delta rho sim0.35 mu Omega cdot$cm, is roughly constant over the entire compositional range. The MR ratio $ Delta rho/ rho,$ which is as high as 3.0% in a Si/(Ni40A/Co5A) $ times$ 6 multilayer, is therefore more strongly dependent on the zero-field resistivity $ rho.$ By fitting a semi-classical model to the resistivity compositional variation, we determined the interface contribution to the resistivity. The MR measurements as well as the magnetic anisotropy of the films, studied by vibrating sample magnetometry (VSM) and magneto-optical Kerr effect (MOKE) magnetometry, are consistent with the origin of the observed MR effect being anisotropic magnetoresistance (AMR). The highest magnetic sensitivity measured at zero-field and constant in the range from ${ sim}{-}10$ Oe to +10 Oe was 0.1%/Oe. This value compares well with other alloys being developed as magnetic sensors. (Abstract shortened by UMI.)
Khym, Sungwon. "Magnetotransport studies of semimetallic InAs/GaSb structures". Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325145.
Testo completoSymons, David Malcolm. "Magnetotransport studies on new GaSb/InAs heterostructures". Thesis, University of Oxford, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260114.
Testo completoCreeth, Graham Leslie. "Growth and magnetotransport studies of epitaxial graphene". Thesis, University of Leeds, 2010. http://etheses.whiterose.ac.uk/1363/.
Testo completoMarquardt, Ronald R. McGill T. C. McGill T. C. "Quantum magnetotransport studies of semiconductor heterostructure devices /". Diss., Pasadena, Calif. : California Institute of Technology, 1995. http://resolver.caltech.edu/CaltechETD:etd-10172007-111750.
Testo completoHowell, D. F. "Studies of two-dimensional electron systems in semiconductors at high magnetic fields". Thesis, University of Oxford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.253390.
Testo completoMallet, Jennifer. "Transport studies of the fractional quantum hall effect". Thesis, University of Oxford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.237872.
Testo completoMartin, Patrick Michael. "Magnetospectroscopy of electron and hole tunnelling in (AlGa) as resonant tunnelling structures". Thesis, University of Nottingham, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363614.
Testo completoD'Anjou, Benjamin. "Theory of anomalous magnetotransport in triple quantum dots". Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=110764.
Testo completoDans ce mémoire, nous étudions les oscillations de Aharonov-Bohm apparaissant dans le transport électronique à travers trois boîtes quantiques formant un anneau traversé par un champ magnétique. Nous utilisons un Hamiltonien microscopique de Hubbard et l'équation maîtresse généralisée de Nakajima-Zwanzig pour montrer que lorsqu'une grande tension électrique est appliquée, le transport peut être décrit à l'aide d'une équation maîtresse cohérente dans la forme de Lindblad. Nous résolvons cette équation numériquement et analytiquement pour calculer le courant électrique transmis à travers la triple boîte quantique. Nous montrons que le courant oscille avec une période h/ne en fonction du flux magnétique traversant l'anneau et que, sous certaines conditions, l'amplitude de la période n=3 est beaucoup plus grande que l'amplitude de la période n=2. Nous discutons également de l'effet du déphasage induit par les fluctuations du champ électrique environnant sur l'amplitude des oscillations de périodes h/ne et montrons que les taux de déphasage entre les paires de boîtes quantiques augmentent quand la taille de l'anneau augmente, causant la disparition de la domination anormale des oscillations n=3 dans les anneaux mésoscopiques de plus grande taille.
Daly, Matthew Stuart. "High pressure magnetotransport studies of InAs/GaSb heterostructures". Thesis, University of Oxford, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318520.
Testo completoDalton, Karen Sonya Helen. "Pulsed field studies of magnetotransport in semiconductor heterostructures". Thesis, University of Oxford, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325936.
Testo completoCooper, L. J. "Magnetotransport studies of InAs/GaSb/AlSb-based structures". Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.597965.
Testo completoMeng, Tiejun. "Magnetization properties and magnetotransport of cobalt nano-structures". Thesis, University of Cambridge, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.611529.
Testo completoEsien, Kane. "Magnetotransport measurements of NiFe thin films and nanostructures". Thesis, Cardiff University, 2016. http://orca.cf.ac.uk/99978/.
Testo completoGilbertson, Adam Maurick. "Spin and magnetotransport properties of narrow gap semiconductors". Thesis, Imperial College London, 2010. http://hdl.handle.net/10044/1/11387.
Testo completoRaičević, Ivana. "Charge glassiness and magnetotransport in lightly doped cuprates". Tallahassee, Florida : Florida State University, 2009. http://etd.lib.fsu.edu/theses/available/etd-07162009-144126.
Testo completoAdvisors: Dragana Popović [and] Vladimir Dobrosavljević, Florida State University, College of Arts and Sciences, Dept. of Physics. Title and description from dissertation home page (viewed on Nov. 2, 2009). Document formatted into pages; contains xvi, 106 pages. Includes bibliographical references.
Huang, Nathaniel Jian. "Magnetotransport in graphene and related two-dimensional systems". Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:4944f2d4-83e5-44ee-90f5-faa35acac80f.
Testo completoGeishendorf, Kevin [Verfasser], Kornelius [Akademischer Betreuer] Nielsch, Kornelius [Gutachter] Nielsch e Georg [Gutachter] Woltersdorf. "Magnetotransport Experiments in Co₃Sn₂S₂ Microstructures : Magnetotransport Experimente in Co3Sn2S2 Mikrostrukturen / Kevin Geishendorf ; Gutachter: Kornelius Nielsch, Georg Woltersdorf ; Betreuer: Kornelius Nielsch". Dresden : Technische Universität Dresden, 2020. http://d-nb.info/1227311044/34.
Testo completoRüster, Christian. "Magnetotransport effects in lateral and vertical ferromagnetic semiconductor junctions". [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=980715393.
Testo completoWeichsel, Christian. "Magnetotransport und Kapazitätsspektroskopie an zweidimensionalen Elektronengasen und InAs-Quantenpunkten". [S.l. : s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=970608616.
Testo completoMaher, Matthew John. "Magnetism and magnetotransport in Fe and Co nanocluster assemblies". Thesis, University of Leicester, 2002. http://hdl.handle.net/2381/30660.
Testo completoVenditti, Mario J. "Magnetotransport along non parabolically confined quasi-one-dimensional channels". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ59275.pdf.
Testo completoGayer, Nils [Verfasser]. "Magnetotransport und Thermoelektrik in zylindrischen GaAs-Halbleiterstrukturen / Nils Gayer". München : Verlag Dr. Hut, 2018. http://d-nb.info/1170474128/34.
Testo completoMelhuish, Gavin. "Magnetotransport studies of artificially disordered two-dimensional electron gases". Thesis, University of Exeter, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.425295.
Testo completoAlper, Muersel. "Electrodeposited magnetic superlattices : (growth, characterization, magnetic and magnetotransport properties)". Thesis, University of Bristol, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261317.
Testo completoPARENT, FRANCK. "Elaboration et proprietes de magnetotransport de films magnetiques granulaires". Paris 11, 1996. http://www.theses.fr/1996PA112324.
Testo completoGauthier, Didier. "Magnetotransport sous pression hydrostatique dans le systeme gainas/inp". Toulouse, INSA, 1988. http://www.theses.fr/1988ISAT0016.
Testo completoFisher, Ian Randal. "An experimental study of magnetotransport properties of several new superconductors". Thesis, University of Cambridge, 1997. https://www.repository.cam.ac.uk/handle/1810/251609.
Testo completoPrasad, Rajesh Shyam. "Magnetotransport studies in N-Channel Si:SiGe modulation doped quantum wells". Thesis, Imperial College London, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309227.
Testo completoBassom, Neil James. "Magnetotransport studies of space charge layers in narrow-gap semiconductors". Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.291070.
Testo completoWang, Kaiyou. "Magnetotransport and magnetic properties of (Ga,Mn)As thin films". Thesis, University of Nottingham, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.416733.
Testo completoHayes, David Geoffrey. "Magneto-optical and magnetotransport studies of low dimensional semiconductor structures". Thesis, University of Nottingham, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314755.
Testo completoTyler, André-William David. "An investigation into the magnetotransport properties of layered superconducting perovskites". Thesis, University of Cambridge, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624684.
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