Direct calculation of the nonequilibrium current by a recursive method

被引：24

作者：

Nonoyama, S ^{[1
]}

Oguri, A

机构：

[1] Nagoya Univ, Dept Appl Phys, Chikusa Ku, Nagoya, Aichi 46401, Japan

[2] Osaka City Univ, Fac Sci, Dept Mat Sci, Osaka 558, Japan

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 15期

关键词：

D O I：

10.1103/PhysRevB.57.8797

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The spatial distribution of the nonequilibrium current in a series of two point contacts under a finite bias voltage is investigated numerically making use of a recursive Green-function method based on the Keldysh formalism. The results of the current distribution show an interesting behavior such as the existence of vortices in between the two barriers. The temperature dependence of the nonlinear current-voltage characteristic is also studied. [S0163-1829(98)02216-4].

引用

页码：8797 / 8800

页数：4

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