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Aharonov-Casher and spin Hall effects in mesoscopic ring structures with strong spin-orbit interaction RID A-1315-2011 RID B-3617-2008

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dc.creator Borunda, M. F. en_US
dc.creator Liu, Xin en_US
dc.creator Kovalev, Alexey A. en_US
dc.creator Liu, Xiong-Jun en_US
dc.creator Jungwirth, T. en_US
dc.creator Sinova, Jairo. en_US
dc.date.accessioned 2011-10-10T21:09:12Z
dc.date.available 2011-10-10T21:09:12Z
dc.date.issued 2008 en_US
dc.identifier.citation M. F. Borunda, Xin Liu, Alexey A. Kovalev, Xiong-Jun Liu, T. Jungwirth and Jairo Sinova. Phys.Rev.B 78 245315 2008."Copyright (2008) by the American Physical Society." en_US
dc.identifier.uri http://dx.doi.org/10.1103/PhysRevB.78.245315 en_US
dc.identifier.uri http://hdl.handle.net/1969.1/127350
dc.description Journals published by the American Physical Society can be found at http://journals.aps.org/ en_US
dc.description.abstract We study the quantum interference effects induced by the Aharonov-Casher phase in asymmetrically confined two-dimensional electron and heavy-hole ring structure systems, taking into account the electrically tunable spin-orbit (SO) interaction. We have calculated the nonadiabatic transport properties of charges (heavy holes and electrons) in two-probe thin-ring structures and compare how the form of the SO coupling of the carriers affects it. We show that both the SO splitting of the bands and the carrier density can be used to modulate the conductance through the ring. We show that the dependence on carrier density is due to the backscattering from the leads, which shows pronounce resonances when the Fermi energy is close to the eigenenergy of the ring. We also calculate the spin Hall conductivity and longitudinal conductivity in four-probe rings as a function of the carrier density and SO interaction, demonstrating that for heavy-hole carriers both conductivities are larger than for electrons. Finally, we investigate the transport properties of mesoscopic rings with spatially inhomogeneous SO coupling. We show that devices with inhomogeneous SO interaction exhibit an electrically controlled spin-flipping mechanism. en_US
dc.language.iso en en_US
dc.publisher American Physical Society en_US
dc.subject carrier density en_US
dc.subject mesoscopic systems en_US
dc.subject quantum interference phenomena en_US
dc.subject semiconductor quantum wells en_US
dc.subject spin Hall effect en_US
dc.subject spin-orbit interactions en_US
dc.subject two-dimensional electron gas en_US
dc.subject PHASE en_US
dc.subject TRANSPORT en_US
dc.subject DEVICES en_US
dc.subject Physics en_US
dc.title Aharonov-Casher and spin Hall effects in mesoscopic ring structures with strong spin-orbit interaction RID A-1315-2011 RID B-3617-2008 en_US
dc.type Article en_US
local.department Physics and Astronomy en_US

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