Integer quantum Hall effect in a square lattice revisited

被引：8
作者：
Maiti, Santanu K. [1 ]
Dey, Moumita [2 ]
Karmakar, S. N. [2 ]
机构：
[1] Tel Aviv Univ, Sch Chem, IL-69978 Tel Aviv, Israel
[2] Saha Inst Nucl Phys, Theoret Condensed Matter Phys Div, Kolkata 700064, India
来源：
PHYSICS LETTERS A | 2012年 / 376卷 / 16期
关键词：
Quantum Hall effect; Landauer-Buttiker formalism; Landauer-Keldysh formalism; Lattice model; MASSLESS DIRAC FERMIONS; CONDUCTANCE; RESISTANCE;
D O I：
10.1016/j.physleta.2012.03.008
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We investigate the phenomenon of integer quantum Hall effect in a square lattice, subjected to a perpendicular magnetic field, through Landauer-Buttiker formalism within the tight-binding framework. The oscillating nature of longitudinal resistance and near complete suppression of momentum relaxation processes are examined by studying the flow of charge current using Landauer-Keldysh prescription. Our analysis for the lattice model corroborates the finding obtained in the continuum model and provides a simple physical understanding. (C) 2012 Elsevier B.V. All rights reserved.
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收藏
页码：1366 / 1370
页数：5
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