Spin-orbit Coupling, Spin Currents and Emergent Gauge Fields in Solids

被引：0
|
作者：
Sa, Debanand [1 ]
机构：
[1] Banaras Hindu Univ, Dept Phys, Varanasi 221005, Uttar Pradesh, India
来源：
FUNCTIONAL MATERIALS-BOOK | 2012年 / 1461卷
关键词：
Spin-orbit coupling; Spin polarized transport; Quantum Hall effects; Gauge field theories; BERRY-PHASE; NEUTRAL PARTICLES; MESOSCOPIC RINGS; MULTIFERROICS;
D O I：
10.1063/1.4736882
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The role of spin-orbit interaction has been exploited to construct an emergent gauge theory in solids. It has been shown that the charge and spin currents in such a solid form a SU(2)xU(1) gauge theory. The lack of gauge symmetry in the SU(2) sector and as a consequence, the non-conservation of spin is spelled out. The phenomenon of spin motive force and spin Hall effect is discussed. The importance of such force in the mesoscopic transport as well as Aharonov-Casher effect is outlined. It is shown that the spin currents in such a theory become the source of electric field.
引用
收藏
页码：160 / 169
页数：10
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