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Fermi liquid theory of resonant spin pumping

By C. P. Moca, A. Alex, A. Shnirman and Gergely Attila Zaránd


We study resonant all-electric adiabatic spin pumping through a quantum dot with two nearby levels by using a Fermi liquid approach in the strongly interacting regime, combined with a projective numerical renormalization group (NRG) theory. Due to spin-orbit coupling, a strong spin pumping resonance emerges at every charging transition, which allows for the transfer of a spin similar to h/2 through the device in a single pumping cycle. Depending on the precise geometry of the device, controlled pure spin pumping is also possible

Topics: QC Physics / fizika
Publisher: American Physical Society
Year: 2013
DOI identifier: 10.1103/PhysRevB.88.241404
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