Spin Drag in Noncondensed Bose Gases

被引：22
|
作者：
Duine, R. A. [1 ]
Stoof, H. T. C. [1 ]
机构：
[1] Univ Utrecht, Inst Theoret Phys, NL-3584 CE Utrecht, Netherlands
来源：
PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 17期
基金：
欧洲研究理事会;
关键词：
2-DIMENSIONAL ELECTRON-SYSTEMS; COULOMB DRAG; PHASE;
D O I：
10.1103/PhysRevLett.103.170401
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We show how time-dependent magnetic fields lead to spin motive forces and spin drag in a spinor Bose gas. We propose to observe these effects in a toroidal trap and analyze this particular proposal in some detail. In the linear-response regime we define a transport coefficient that is analogous to the usual drag resistivity in electron bilayer systems. Because of Bose enhancement of atom-atom scattering, this coefficient strongly increases as temperature is lowered. We also investigate the effects of heating.
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页数：4
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