dc.creatorArrachea, Liliana del Carmen
dc.creatorvon Oppen, Felix
dc.date.accessioned2018-05-29T21:16:00Z
dc.date.accessioned2018-11-06T12:02:03Z
dc.date.available2018-05-29T21:16:00Z
dc.date.available2018-11-06T12:02:03Z
dc.date.created2018-05-29T21:16:00Z
dc.date.issued2015-11
dc.identifierArrachea, Liliana del Carmen; von Oppen, Felix; Nanomagnet coupled to quantum spin Hall edge: An adiabatic quantum motor; Elsevier Science; Physica E; 74; 11; 11-2015; 596-602
dc.identifier1386-9477
dc.identifierhttp://hdl.handle.net/11336/46544
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1862494
dc.description.abstractThe precessing magnetization of a magnetic islands coupled to a quantum spin Hall edge pumps charge along the edge. Conversely, a bias voltage applied to the edge makes the magnetization precess. We point out that this device realizes an adiabatic quantum motor and discuss the efficiency of its operation based on a scattering matrix approach akin to Landauer-Büttiker theory. Scattering theory provides a microscopic derivation of the Landau-Lifshitz-Gilbert equation for the magnetization dynamics of the device, including spin-transfer torque, Gilbert damping, and Langevin torque. We find that the device can be viewed as a Thouless motor, attaining unit efficiency when the chemical potential of the edge states falls into the magnetization-induced gap. For more general parameters, we characterize the device by means of a figure of merit analogous to the ZT value in thermoelectrics.
dc.languageeng
dc.publisherElsevier Science
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.physe.2015.08.031
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1386947715301740
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjecttopological
dc.subjectspin-hall
dc.subjectquantum
dc.subjecttransport
dc.titleNanomagnet coupled to quantum spin Hall edge: An adiabatic quantum motor
dc.typeArtículos de revistas
dc.typeArtículos de revistas
dc.typeArtículos de revistas


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