Quantum versus classical hyperfine-induced dynamics in a quantum dot

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dc.creatorCoish, W. A.
dc.creatorYuzbashyan, E. A.
dc.creatorAltshuler, B. L.
dc.creatorLoss, Daniel
dc.date2006-10-23
dc.date2007-04-29
dc.date.accessioned2026-07-07T07:58:29Z
dc.date.available2026-07-07T07:58:29Z
dc.descriptionIn this article we analyze spin dynamics for electrons confined to semiconductor quantum dots due to the contact hyperfine interaction. We compare mean-field (classical) evolution of an electron spin in the presence of a nuclear field with the exact quantum evolution for the special case of uniform hyperfine coupling constants. We find that (in this special case) the zero-magnetic-field dynamics due to the mean-field approximation and quantum evolution are similar. However, in a finite magnetic field, the quantum and classical solutions agree only up to a certain time scale t<τ_c, after which they differ markedly.
dc.description6 pages, 1 figure, accepted for publication in the Journal of Applied Physics (ICPS06 conference proceedings); v2: updated references, final published version
dc.identifierhttps://arxiv.org/abs/cond-mat/0610633
dc.identifierhttp://arxiv.org/abs/cond-mat/0610633
dc.identifierJ. Appl. Phys. 101, 081715 (2007)
dc.identifierdoi:10.1063/1.2722783
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/128024
dc.subjectMesoscale and Nanoscale Physics
dc.titleQuantum versus classical hyperfine-induced dynamics in a quantum dot
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