Localization length in a quasi-one-dimensional disordered system in the presence of an electric field
作者： Vladimir Gasparian , Marc Cahay , Esther Jódar
DOI: 10.1088/0953-8984/23/4/045301
关键词: Universal curve 、 Power law 、 Condensed matter physics 、 Physics 、 Mesoscopic physics 、 Inverse 、 Electric field 、 Particle in a one-dimensional lattice 、 Exponential function 、 Quasi one dimensional
摘要: A two-dimensional ?-potential Kronig?Penney model for quasi-one-dimensional (Q1D) disordered systems is used to study analytically the influence of a constant electric field on inverse localization length (LL). Based Green's function formalism we have calculated LL as incoming energy E, F, L Q1D sample, number modes M in transverse direction and amount disorder w. We show that, large systems, states are weakly localized, i.e.?we deal with power-law localization. With increasing mesoscopic transition from exponential behavior takes place, 1D systems. note that graphs showing change significantly F (for fixed M) rather than F). also representing ratio corresponding without collapse all into universal curve strip model.
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