dc.creator | Arrachea, Liliana del Carmen | |
dc.creator | von Oppen, Felix | |
dc.date.accessioned | 2018-05-29T21:16:00Z | |
dc.date.accessioned | 2018-11-06T12:02:03Z | |
dc.date.available | 2018-05-29T21:16:00Z | |
dc.date.available | 2018-11-06T12:02:03Z | |
dc.date.created | 2018-05-29T21:16:00Z | |
dc.date.issued | 2015-11 | |
dc.identifier | Arrachea, 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.identifier | 1386-9477 | |
dc.identifier | http://hdl.handle.net/11336/46544 | |
dc.identifier | CONICET Digital | |
dc.identifier | CONICET | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1862494 | |
dc.description.abstract | The 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.language | eng | |
dc.publisher | Elsevier Science | |
dc.relation | info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1016/j.physe.2015.08.031 | |
dc.relation | info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S1386947715301740 | |
dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | |
dc.rights | info:eu-repo/semantics/restrictedAccess | |
dc.subject | topological | |
dc.subject | spin-hall | |
dc.subject | quantum | |
dc.subject | transport | |
dc.title | Nanomagnet coupled to quantum spin Hall edge: An adiabatic quantum motor | |
dc.type | Artículos de revistas | |
dc.type | Artículos de revistas | |
dc.type | Artículos de revistas | |