Magnetization Transfer by a Quantum Ring Device
arXiv:1310.8454 · doi:10.1140/epjb/e2014-50073-9
Abstract
We show that a tight-binding model device consisting of a laterally connected ring at half filling in a tangent time-dependent magnetic field can in principle be designed to pump a purely spin current. The process exploits the spin-orbit interaction in the ring. This behavior is understood analytically and found to be robust with respect to temperature and small deviations from half filling.
4 figures, 1 typo corrected
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