Academic literature on the topic 'Weak localisation'
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Journal articles on the topic "Weak localisation"
Gorbachev, R. V., F. V. Tikhonenko, A. S. Mayorov, D. W. Horsell, and A. K. Savchenko. "Weak localisation in bilayer graphene." Physica E: Low-dimensional Systems and Nanostructures 40, no. 5 (March 2008): 1360–63. http://dx.doi.org/10.1016/j.physe.2007.09.009.
Full textLindqvist, Peter. "Magnetoresistance and weak localisation of amorphous Cu65Ti35." Physica B: Condensed Matter 165-166 (August 1990): 287–88. http://dx.doi.org/10.1016/s0921-4526(90)80993-s.
Full textBieri, J. B., A. Fert, G. Creuzet, and A. Schuhl. "Weak localisation in metallic glasses. I. Magnetoresistance." Journal of Physics F: Metal Physics 16, no. 12 (December 1986): 2099–118. http://dx.doi.org/10.1088/0305-4608/16/12/019.
Full textAlbada, M. P. van, M. B. van der Mark, and A. Lagendijk. "Polarisation effects in weak localisation of light." Journal of Physics D: Applied Physics 21, no. 10S (October 14, 1988): S28—S31. http://dx.doi.org/10.1088/0022-3727/21/10s/009.
Full textHilke, Michael, Mathieu Massicotte, Eric Whiteway, and Victor Yu. "Weak Localisation in Clean and Highly Disordered Graphene." Journal of Physics: Conference Series 456 (August 5, 2013): 012016. http://dx.doi.org/10.1088/1742-6596/456/1/012016.
Full textGabrielli, P. G., S. Gabrielli, and N. Lisi. "Resistance measurements and weak localisation in long SWNTs." Molecular Simulation 35, no. 6 (May 2009): 473–76. http://dx.doi.org/10.1080/08927020802635137.
Full textLindqvist, P., and O. Rapp. "Weak localisation and interaction effects in amorphous CuTi alloys." Journal of Physics F: Metal Physics 18, no. 9 (September 1988): 1979–94. http://dx.doi.org/10.1088/0305-4608/18/9/017.
Full textHu, G. Y., and R. F. O'Connell. "Weak localisation theory for lightly doped semiconductor quantum wires." Journal of Physics: Condensed Matter 2, no. 24 (June 18, 1990): 5335–44. http://dx.doi.org/10.1088/0953-8984/2/24/006.
Full textLütjering, G., K. Richter, D. Weiss, J. Mao, R. H. Blick, K. von Klitzing, and C. T. Foxon. "Weak localisation in ballistic cavities filled with antidot arrays." Surface Science 361-362 (July 1996): 709–13. http://dx.doi.org/10.1016/0039-6028(96)00505-5.
Full textHamilton, A. R., M. Y. Simmons, M. Pepper, E. H. Linfield, P. D. Rose, and D. A. Ritchie. "Is there a Metallic State in Two Dimensions?" Australian Journal of Physics 53, no. 4 (2000): 513. http://dx.doi.org/10.1071/ph00010.
Full textDissertations / Theses on the topic "Weak localisation"
Weston, Matthew James Dominic. "The genetic and molecular characterisation of weak localiser : a gene required for oskar mRNA localisation in Drosophila." Thesis, University of Cambridge, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.627603.
Full textMuller, Kilian. "Coherent transport of ultracold atoms in disordered potentials : Manipulation of time-reversal symmetry in weak localization experiments." Thesis, Palaiseau, Institut d'optique théorique et appliquée, 2014. http://www.theses.fr/2014IOTA0013/document.
Full textIn this manuscript the coherence effects of wave propagation in disordered potentials is studied. Our experiment uses ultracold atoms as a probe, a system allowing for a very good control over parameters such as the dimensionality, interactions, initial velocity of the atoms, and the potential landscape. Exploiting this flexibility we were able to perform experiments in the strongly and the weakly localized regime. In the former the 3D expansion of a BEC was monitored in real space, resulting in the observation of 3D Anderson localization with a maximum localized fraction of about 20%. In the latter the atoms were launched into a quasi-2D disorder with a well defined initial velocity. Monitoring the momentum space distribution the mean scattering time and the transport time can be directly measured, and coherent backscattering (CBS) is clearly visible as a peak in the backwards direction. In a first set of experiments the evolution of the CBS amplitude and width were recorded and found to be in good agreement with theory. Microscopically, CBS stems from the constructive interference of time-reversed multiply scattered paths. In a second set of CBS experiments we manipulated the time-reversal symmetry (TRS) of the wave propagation. A surgical dephasing was introduced via a shortly pulsed gradient field, which brakes TRS and suppresses CBS except for a brief moment, when a revival of CBS is observed. This novel effect showcases explicitly the role of coherence and TRS in Coherent Backscattering and weak localization
Ekanga, Trésor. "Systèmes quantiques multi-particulaires et localisation à basses énergies ou à faible interaction." Thesis, Sorbonne Paris Cité, 2017. http://www.theses.fr/2017USPCC003/document.
Full textIn this thesis, we study for the N-particles Schrodinger operators the Anderson localization phenomenon which consists of both exponential localization of eigenfunctions and dynamical localization. We rst consider the discrete multi-particle Anderson model with a short range interaction and a random potential whose values are independent and identically distributed i.i.d. with a log-Hölder continuous common probability distribution function. For such model, we show that the bottom of its spectrum is non-random and prove the Anderson localization for energies suciently close to the spectral edge. On the other hand, we establish that the complete localization from singleparticle systems extends to multi-particle systems with suciently weak interaction at arbitrary disorder and for absolute continuous probability distribution function of the i.i.d random variables. The results are proved by an adaptation to multi-particle systems of the vari- able energy multi-scale analysis which allows singular distributions instead of the fractional moments method. Wegner bounds, useful for the multi-scale analysis are proved for separable cubes using the Stollmann's Lemma. We also prove the Combes-Thomas estimate which plays an important role in the analysis of extreme energies
Torri, Niccolò. "Phénomènes de localisation et d’universalité pour des polymères aléatoires." Thesis, Lyon 1, 2015. http://www.theses.fr/2015LYO10114/document.
Full textThe pinning model describes the behavior of a Markov chain in interaction with a distinguished state. This interaction can attract or repel the Markov chain path with a force tuned by two parameters, h and β. If β = 0 we obtain the homogeneous pinning model, which is completely solvable. The disordered pinning model, i.e. when β > 0, is most challenging and mathematically interesting. In this case the interaction depends on an external source of randomness, independent of the Markov chain, called disorder. The interaction is realized by perturbing the original Markov chain law via a Gibbs measure, which defines the Pinning Model. Our main aim is to understand the structure of a typical Markov chain path under this new probability measure. The first research topic of this thesis is the pinning model in which the disorder is heavy-tailed and the return times of the Markov chain have a sub-exponential distribution. In our second result we consider a pinning model with a light-tailed disorder and the return times of the Markov chain with a polynomial tail distribution, with exponent α > 0. It is possible to show that there exists a critical point, h(β). Our goal is to understand the behavior of the critical point when β -> 0. The answer depends on the value of α and in the literature there are precise results only for the case α < ½ et α > 1. We show that for α ∈ (1/2, 1) the behavior of the pinning model in the weak disorder limit is universal and the critical point, suitably rescaled, converges to the related quantity of a continuum model
Jabakhanji, Bilal. "Etudes des propriétés de transport de mono et de multicouches de graphène épitaxiées sur sic." Thesis, Montpellier 2, 2012. http://www.theses.fr/2012MON20130/document.
Full textIn this work, we present the characterization, mainly in transport, of epitaxial graphene layers produced by controlled sublimation of silicon carbide substrate (SiC). Electronic transport measurements are performed at low temperature (T ~ 1.6 K) and high magnetic field. In the first part, we explain the specific method ('graphite cap') used for growth of the samples studied in this work at CNM, Barcelona. The method of 'graphite cap' provides graphene ribbons homogeneous and isolated for the fabrication of electronic devices.Graphene on SiC gives very different results depending on the conditions of growth (temperature, pressure…) and the face of SiC substrate used: carbon face (C-face) or silicon face (Si-face).On the carbon face, two SiC polytypes have been used for the graphene growth:(i) On axis 6H-SiC: graphene ribbons are obtained on the whole surface. The length of ribbon approaches 600 µm and the width do not exceed 6 µm. The graphene follows the formation of steps on the SiC resulting from surface reconstruction during growth (‘step bunching'), which affects the graphene width. Monolayers were identified by Raman spectroscopy. For all measured samples, we found that the graphene is p-typed doped with a Hall concentration between 5x1012 and 5x1013cm-2. The quantum Hall effect is not observed because of the high doping level. But the Shubnikov de Haas oscillations (SdH) have been well resolved and studied. The phase of the oscillations is equal to zero, which is a signature from the presence of graphene monolayer.(ii) 8° off axis 4H-SiC: graphene ribbons obtained are larger and can reach a length of 600 µm and a width of 50 µm. The use of a SiC substrate with intentional disorientation upon cleavage of the initial surface allows the coalescence of the graphene ribbons. For all measured devices on this sample, we found that the graphene is p-typed doped (as determined from the sign of the Hall effect) with a Hall concentration between 8x1011 and 1013 cm-2. Mobilities varied between 1000 and 11000 cm²/Vs from device to device at 4K. Magnetoresistance revealed both Shubnikov-de Haas (SdH) oscillations, and interference phenomena (weak localization and antilocalization). For some low doped devices, Quantum Hall effect was observed. All quantum phenomena observed are signatures on the intrinsic properties of graphene monolayers.The main drawback of the epitaxial growth technique is the difficulty to control of the carrier density. Here, we investigate a bottom gate of a graphene device, epitaxially grown on the C-face of SiC substrate. The gate was realized by Nitrogen atoms implantation in the SiC crystal. The transport measurements have shown the effectiveness of the gate to control the type of carriers. The quantum Hall effect was observed for both types of carriers with remarkable Hall plateaus width (23 T).On the silicon face, we discuss results obtained from few layer graphene (FLG) grown epitaxially on the (0001) surface of a 6H-SiC substrate. Carriers are now like electrons through the buffer layer that exists on the Si face. The resulting FLG uniformly covers the substrate on which large step bunched terraces are also visible. The FLG is thicker at the step edges, as evidenced by micro-Raman analysis. Indeed, a noticeable anisotropy of the resistance has been detected by magnetotransport measurements at low temperature and high magnetic field. We will argue that this anisotropy originates from different mobilities, in the terraces and at the step edges
Bitar, Diala. "Collective dynamics of weakly coupled nonlinear periodic structures." Thesis, Bourgogne Franche-Comté, 2017. http://www.theses.fr/2017UBFCD002/document.
Full textAlthough the dynamics of periodic nonlinear lattices was thoroughly investigated in the frequencyand time-space domains, there is a real need to perform profound analysis of the collectivedynamics of such systems in order to identify practical relations with the nonlinear energy localizationphenomenon in terms of modal interactions and bifurcation topologies. The principal goal ofthis thesis consists in exploring the localization phenomenon for modeling the collective dynamicsof periodic arrays of weakly coupled nonlinear resonators.An analytico-numerical model has been developed in order to study the collective dynamics ofa periodic coupled nonlinear oscillators array under simultaneous primary and parametric excitations,where the bifurcation topologies, the modal interactions and the basins of attraction havebeen analyzed. Arrays of coupled pendulums and electrostatically coupled nanobeams under externaland parametric excitations respectively were considered. It is shown that by increasing thenumber of coupled oscillators, the number of multimodal solutions and the distribution of the basinsof attraction of the resonant solutions increase. The model was extended to investigate the collectivedynamics of periodic nonlinear 2D arrays of coupled pendulums and spherical particles underbase excitation, leading to additional features, mainly larger bandwidth and important vibrationalamplitudes. A second investigation of this thesis consists in identifying the solitons associated tothe collective nonlinear dynamics of the considered arrays of periodic structures and the study oftheir stability
Courtois, Hervé. "Supraconductivité de proximité dans les nanostructures métalliques artificielles." Phd thesis, Université Joseph Fourier (Grenoble), 1994. http://tel.archives-ouvertes.fr/tel-00116792.
Full textRuess, Frank Joachim Physics Faculty of Science UNSW. "Atomically controlled device fabrication using STM." Awarded by:University of New South Wales. Physics, 2006. http://handle.unsw.edu.au/1959.4/24855.
Full textAdroguer, Pierre. "Propriétés de transport électronique des isolants topologiques." Phd thesis, Ecole normale supérieure de lyon - ENS LYON, 2013. http://tel.archives-ouvertes.fr/tel-00832048.
Full textRothman, Johan. "Etude des propriétés structurales, électroniques et magnétiques des couches minces épitaxiées de cerium." Université Joseph Fourier (Grenoble), 1999. http://www.theses.fr/1999GRE10019.
Full textBook chapters on the topic "Weak localisation"
Müller, Cord A., and Christian Miniatura. "Weak Localisation of Light by Atoms with Quantum Internal Structure." In Wave Scattering in Complex Media: From Theory to Applications, 45–58. Dordrecht: Springer Netherlands, 2003. http://dx.doi.org/10.1007/978-94-010-0227-1_3.
Full text"Electrical conductivity of metallic glasses: weak localisation." In The Electrical Properties of Disordered Metals, 105–39. Cambridge University Press, 1995. http://dx.doi.org/10.1017/cbo9780511629020.012.
Full textVance, Philip, Girijesh Prasad, Jim Harkin, and Kevin Curran. "Designing a Compact Wireless Network Based Device-Free Passive Localisation System for Indoor Environments." In Intelligent Systems, 1424–39. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-5643-5.ch061.
Full textConference papers on the topic "Weak localisation"
Alarcón, Daniel, and Rajeev Goré. "Efficient error localisation and imputation for real-world census data using SMT." In ACSW '16: Australasian Computer Science Week. New York, NY, USA: ACM, 2016. http://dx.doi.org/10.1145/2843043.2843052.
Full textSamal, M. K., M. Seidenfuss, E. Roos, B. K. Dutta, and H. S. Kushwaha. "Prediction of Fracture Resistance Behaviour Using Nonlocal Damage Model." In ASME 2007 Pressure Vessels and Piping Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/pvp2007-26815.
Full textBoisseau, M. R., J. Bonnet, G. Freyburger, P. Desbordes, L. Brottier, J. M. Orgogozo, and H. Bricaud. "HEMOSTASIS AND HEMORHEOLOGY AFTER ISCHEMIC STROKE IN PATIENTS WITHOUT CARDIOPATHY AND OTHER LOCALISATION OF ATHEROSCLEROSIS." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1644210.
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