Ballistic quantum transport: Effect of geometrical phases

被引：16

作者：

Frustaglia, D ^{[1
]}

Richter, K ^{[1
]}

机构：

[1] Max Planck Inst Phys Complexer Syst, D-01187 Dresden, Germany

来源：

FOUNDATIONS OF PHYSICS | 2001年 / 31卷 / 02期

关键词：

D O I：

10.1023/A:1017550822221

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the influence of nonuniform magnetic fields on the magneto conductance of mesoscopic microstructures. We show that the coupling of the electron spin to the inhomogenous field gives rises to effects of the Berry phase on ballistic quantum transport and discuss adiabaticity conditions required to observe such effects. We present numerical results for different ring geometries showing a splitting of Aharonov-Bohm conductance peaks for single rings and corresponding signatures of the geometrical phase in weak localization. The latter features can be qualitatively explained in a semiclassical approach to quantum transport.

引用

页码：399 / 421

页数：23

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