ORBITAL MAGNETISM OF 2-DIMENSIONAL ELECTRONS IN CONFINING POTENTIALS

被引：33

作者：

YOSHIOKA, D

FUKUYAMA, H

机构：

[1] UNIV TOKYO,INST SOLID STATE PHYS,MINATO KU,TOKYO 106,JAPAN

[2] UNIV TOKYO,FAC SCI,DEPT PHYS,BUNKYO KU,TOKYO 153,JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1992年 / 61卷 / 07期

关键词：

ORBITAL MAGNETISM; LANDAU DIAMAGNETISM; MESOSCOPIC SYSTEM; QUANTUM DOTS;

D O I：

10.1143/JPSJ.61.2368

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Magnetizations of finite two-dimensional systems in external potentials are investigated. Magnetic field and temperature dependence of the magnetization is calculated exactly. It is found that the magnetization is well defined in the limit of vanishing magnetic field as well as in the limit of T = 0, and that it shows large fluctuation at low temperature as the magnetic field is varied. It is shown that this fluctuating magnetization tends to the Landau diamagnetism at higher temperature or by ensemble averaging.

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页码：2368 / 2381

页数：14

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