中文
相关论文

相关论文: Dynamical Localization of the Chalker-Coddington M…

200 篇论文

Our understanding of localization in the integer quantum Hall effect is informed by a combination of semi-classical models and percolation theory. Motivated by the effect of correlations on classical percolation we study numerically…

介观与纳米尺度物理 · 物理学 2009-11-10 Nancy Sandler , Hamid Maei , Jane' Kondev

Even though the integer quantum Hall transition has been investigated for nearly four decades its critical behavior remains a puzzle. The best theoretical and experimental results for the localization length exponent $\nu$ differ…

无序系统与神经网络 · 物理学 2019-03-20 Martin Puschmann , Philipp Cain , Michael Schreiber , Thomas Vojta

The effect of inter-Landau-band mixing on electron localization in an integer quantum Hall system is studied. We find that mixing of localized states with {\it opposite chirality} tends to delocalize the states. This delocalization effect…

介观与纳米尺度物理 · 物理学 2007-05-23 Gang Xiong , Shi-Dong Wang , Qian Niu , Yupeng Wang , X. C. Xie , De-Cheng Tian , X. R. Wang

We review recent results obtained within the framework of the integer quantum Hall effect in the spirit of the work of Germinet, Klein, Schenker in \cite{GKS}. Landau Hamiltonians perturbed by random electric or magnetic perturbations are…

数学物理 · 物理学 2010-07-09 François Germinet , Constanza Rojas-Molina

We study the hopping transport of a quantum particle through randomly diluted percolation clusters in two dimensions realized both on the square and triangular lattices. We investigate the nature of localization of the particle by…

无序系统与神经网络 · 物理学 2007-09-27 Md Fhokrul Islam , Hisao Nakanishi

The deviation of the energy position of a delocalized state from the center of Landau level is studied in the framework of the Chalker-Coddington model. It is demonstrated that introducing a weak Landau level mixing results in a shift of…

凝聚态物理 · 物理学 2016-08-31 T. V. Shahbazyan , M. E. Raikh

Motivated by the recent numerical studies on the Chalker-Coddington network model that found a larger-than-expected critical exponent of the localization length characterizing the integer quantum Hall plateau transitions, we revisited the…

无序系统与神经网络 · 物理学 2019-02-06 Qiong Zhu , Peng Wu , R. N. Bhatt , Xin Wan

We investigate the integer quantum Hall system in a two dimensional lattice model with spatially correlated disorder by using the efficient method to calculate the Chern number proposed by Fukui \textit{et al}. Distribution of charge…

介观与纳米尺度物理 · 物理学 2009-11-13 Hui Song , Isao Maruyama , Yasuhiro Hatsugai

We study the localization transition in the integer quantum Hall effect as described by the network model of quantum percolation. Starting from a path integral representation of transport Green's functions for the network model, which…

介观与纳米尺度物理 · 物理学 2009-10-28 J. Kondev , J. B. Marston

The scaling theory of the transitions between plateaus of the Hall conductivity in the integer Quantum Hall effect is reviewed. In the model of two-dimensional noninteracting electrons in strong magnetic fields the transitions are…

凝聚态物理 · 物理学 2016-08-31 Bodo Huckestein

We study numerically the effects of measurements on dynamical localization in the kicked rotator model simulated on a quantum computer. Contrary to the previous studies, which showed that measurements induce a diffusive probability…

量子物理 · 物理学 2009-11-10 M. Terraneo , D. L. Shepelyansky

The quantum metric is a fundamental ingredient of band quantum geometry and has recently at tracted intense interest, with most of its transport signatures appearing in the intrinsic second order nonlinear conductivity. In the clean limit,…

无序系统与神经网络 · 物理学 2026-04-23 Bo Yin , Zhijun Wang , Quansheng Wu

The effects of dynamic localization in a solid-state system -- a quantum dot -- are considered. The theory of weak dynamic localization is developed for non-interacting electrons in a closed quantum dot under arbitrary time-dependent…

介观与纳米尺度物理 · 物理学 2015-06-24 V. E. Kravtsov

This paper presents the first experimental evidence of the transition from dynamical localization to delocalization under the influence of a quasi-periodic driving on a quantum system. A quantum kicked rotator is realized by placing cold…

原子物理 · 物理学 2007-05-23 Jean Ringot , Pascal Szriftgiser , Jean-Claude Garreau , Dominique Delande

Using a quantum map version of one-dimensional Anderson model, the localization-delocalization transition of quantum diffusion induced by coherent dynamical perturbation is investigated in comparison with quantum standard map. Existence of…

无序系统与神经网络 · 物理学 2016-01-20 Hiroaki S. Yamada , Fumihiro Matsui , Kensuke S. Ikeda

Localization and delocalization of quantum diffusion in time-continuous one-dimensional Anderson model perturbed by the quasi-periodic harmonic oscillations of $M$ colors is investigated systematically, which has been partly reported by the…

无序系统与神经网络 · 物理学 2022-05-11 Hiroaki S. Yamada , Kensuke S. Ikeda

In two-dimensional quantum site-percolation square lattice models, the von Neumann entropy is extensively studied numerically. At a certain eigenenergy, the localization-delocalization transition is reflected by the derivative of von…

无序系统与神经网络 · 物理学 2009-12-01 Longyan Gong , Peiqing Tong

We prove quantization of the Hall conductance for continuous ergodic Landau Hamiltonians under a condition on the decay of the Fermi projections. This condition and continuity of the integrated density of states are shown to imply…

数学物理 · 物理学 2015-05-13 François Germinet , Abel Klein , Jeffrey H. Schenker

The use of quantum entanglement to study condensed matter systems has been flourishing in critical systems and topological phases. Additionally, using real-space entanglement entropies and entanglement spectra one can characterize localized…

介观与纳米尺度物理 · 物理学 2013-12-20 Ian Mondragon-Shem , Mayukh Khan , Taylor L. Hughes

We study quantum percolation which is described by a tight-binding Hamiltonian containing only off-diagonal hopping terms that are generally in quenched binary disorder (zero or one). In such a system, transmission of a quantum particle is…

无序系统与神经网络 · 物理学 2007-09-20 Md Fhokrul Islam , Hisao Nakanishi