Weak localization and conductance fluctuations in a quantum dot with parallel magnetic field and spin-orbit scattering

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dc.creatorCremers, Jan-Hein
dc.creatorBrouwer, Piet W.
dc.creatorFalko, Vladimir I.
dc.date2003-04-09
dc.date.accessioned2026-07-07T02:50:42Z
dc.date.available2026-07-07T02:50:42Z
dc.descriptionIn the presence of both spin-orbit scattering and a magnetic field the conductance of a chaotic GaAs quantum dot displays quite a rich behavior. Using a Hamiltonian derived by Aleiner and Falko [Phys. Rev. Lett. 87, 256801 (2001)] we calculate the weak localization correction and the covariance of the conductance, as a function of parallel and perpendicular magnetic field and spin-orbit coupling strength. We also show how the combination of an in-plane magnetic field and spin-orbit scattering gives rise to a component to the magnetoconductance that is anti-symmetric with respect to reversal of the perpendicular component of the magnetic field and how spin-orbit scattering leads to a "magnetic-field echo" in the conductance autocorrelation function. Our results can be used for a measurement of the Dresselhaus and Bychkov-Rashba spin-orbit scattering lengths in a GaAs/GaAlAs heterostructure.
dc.description15 pages, RevTeX, 5 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0304222
dc.identifierhttp://arxiv.org/abs/cond-mat/0304222
dc.identifierPhys. Rev. B 68, 125329 (2003)
dc.identifierdoi:10.1103/PhysRevB.68.125329
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/21195
dc.subjectMesoscale and Nanoscale Physics
dc.titleWeak localization and conductance fluctuations in a quantum dot with parallel magnetic field and spin-orbit scattering
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