Experimental Realization of a Quantum Spin Pump
Mesoscale and Nanoscale Physics
2012-11-19 v2
Abstract
We demonstrate the operation of a quantum spin pump based on cyclic radio-frequency excitation of a GaAs quantum dot, including the ability to pump pure spin without pumping charge. The device takes advantage of bidirectional mesoscopic fluctuations of pumped current, made spin-dependent by the application of an in-plane Zeeman field. Spin currents are measured by placing the pump in a focusing geometry with a spin-selective collector.
Cite
@article{arxiv.cond-mat/0302492,
title = {Experimental Realization of a Quantum Spin Pump},
author = {Susan K. Watson and R. M. Potok and C. M. Marcus and V. Umansky},
journal= {arXiv preprint arXiv:cond-mat/0302492},
year = {2012}
}
Comments
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