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Article overview
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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 | Abstract: | We 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 | Services: | Forum | Review | PDF | Favorites |
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