Journal
NEW JOURNAL OF PHYSICS
Volume 8, Issue -, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/8/5/073
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By cyclic variation of the magnetic field and electric field, we investigate the spin current of a carbon nanotube-based molecular quantum spin pump. At finite frequencies, we calculate the spin current to the second order in pumping amplitudes. In the presence of the magnetic field, a pure spin current without accompanying charge current is generated at zero bias voltage. The photon-assisted process is clearly observed in the spin current.
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