Experimental realization of a quantum spin pump

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 appl...

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Veröffentlicht in:	Physical review letters 2003-12, Vol.91 (25), p.258301-258301
Hauptverfasser:	Watson, Susan K, Potok, R M, Marcus, C M, Umansky, V
Format:	Artikel
Sprache:	eng
Online-Zugang:	Volltext
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