Influences of Topological Defect on Spin Hall Effect
arXiv:1301.4363 · doi:10.1103/PhysRevA.87.032107
Abstract
We study the influence of topological defect on the spin current as well as the spin Hall effect. We find that the nontrivial deformation of the space-time due to topological defect can generate a spin dependent current which then induces an imbalanced accumulation of spin states on the edges of sample. The corresponding spin-Hall conductivity has also been calculated for the topological defect of a cosmic string. Comparing to the ordinary value, a correction which is linear with mass density of the cosmic string appears. Our approach to the dynamics of non-relativistic spinor in the presence of a topological defect is based on the Foldy-Wouthuysen transformation. The spin current is obtained in by using the extended Drude model which is independent of the scattering mechanism.
6 pages, no figure. Two references are added
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- Effect of cosmic string on spin dynamics
- Probing Noncommutativities of Phase Space by Using Persistent Charged Current and Its Asymmetry
- Hall conductivity in the cosmic defect and dislocation space-time
- Scattering and bound states of a spin--1/2 neutral particle in the cosmic string spacetime
- Influences of the coordinate dependent noncommutative space on charged and spin currents
- Noncommutative effects on the fluid dynamics and modifications of the Freidmann equation