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29 March 2024
 
  » arxiv » cond-mat/0211460

 Article overview


Parametric quantum spin pump
Wei Zheng ; Junling Wu ; Baigeng Wang ; Jian Wang ; Qingfeng Sun ; Hong Guo ;
Date 21 Nov 2002
Journal Phys. Rev. B Vol.68, 113306 (2003)
Subject cond-mat
AbstractWe investigate a non-adiabatic parametric quantum pump consists of a nonmagnetic scattering region connected by two ferromagnetic leads. The presence of ferromagnetic leads allows electrons with different spins to experience different potential landscape. Using this effect we propose a quantum spin pump that drives spin-up electrons to flow in one direction and spin-down electrons to flow in opposite direction. As a result, the spin pump can deliver a spin current with vanishing charge current.
Source arXiv, cond-mat/0211460
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