Specific heat in the integer quantum Hall effect: An exact diagonalization approach

被引：6
|
作者：
Mandal, SS
Acharyya, M
机构：
[1] Indian Inst Sci, Dept Phys, Bangalore 560012, Karnataka, India
[2] Jawaharlal Nehru Ctr Adv Sci Res, Condensed Matter Theory Unit, Bangalore 560064, Karnataka, India
来源：
PHYSICA B | 1998年 / 252卷 / 1-2期
关键词：
integer quantum Hall effect; specific heat; tight binding model;
D O I：
10.1016/S0921-4526(98)00047-7
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We have studied the integer quantum Hall effect at finite temperatures by diagonalizing a single body tight binding model Hamiltonian including Aharonov-Bohm phase. We have studied the energy dependence of the specific heat and the Hall conductivity at a given temperature. The specific heat shows a sharp peak between two consecutive Hall plateaus. At very low temperatures, the numerical results of the temperature variations of specific heat (in the plateau region) are in good agreement with the analytical results. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：91 / 95
页数：5
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