Mechanisms for extra conductance plateaus in quantum wires

被引：21

作者：

Hirose, K

Li, SS

Wingreen, NS

机构：

[1] NEC Corp Ltd, Fundamental Res Labs, Tsukuba, Ibaraki 3058501, Japan

[2] NEC Res Inst, Princeton, NJ 08540 USA

来源：

PHYSICAL REVIEW B | 2001年 / 63卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.63.033315

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Spin-density-functional theory is employed to calculate the conductance G through a quasi-one-dimensional quantum wire. In addition to the usual subband quantization plateaus at G=n(2e(2)/h), we find additional structures at (n+1/2)(2e(2)/h). The extra structures appear whether or not the electrons in the wire spin polarize. However, only the spin-polarized case reproduces the experimental temperature and magnetic field dependences.

引用

页数：4

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