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dc.contributor.authorAmo A
dc.contributor.authorVina L
dc.contributor.authorLugli P
dc.contributor.authorTejedor C
dc.contributor.authorToropov AI
dc.contributor.authorZhuravlev KS
dc.date.accessioned2019-04-29T11:33:10Z
dc.date.available2019-04-29T11:33:10Z
dc.date.issued2007
dc.identifier.issn1098-0121
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevB.75.085202
dc.identifier.urihttps://journals.aps.org/prb/abstract/10.1103/PhysRevB.75.085202
dc.identifier.urihttp://hdl.handle.net/10863/9603
dc.description.abstractBy means of time-resolved optical orientation under strong optical pumping, the k dependence of the electron spin-flip time (tau(sf)) in undoped GaAs is experimentally determined. tau(sf) monotonically decreases by more than one order of magnitude when the electron kinetic energy varies from 2 to 30 meV. At the high excitation densities and low temperatures of the reported experiments the main spin-flip mechanism of the conduction band electrons is the Bir-Aronov-Pikus. By means of Monte Carlo simulations we evidence that phase-space filling effects result in the blocking of the spin flip, yielding an increase of tau(sf) with excitation density. These effects obtain values of tau(sf) up to 26 ns at k approximate to 0, the longest reported spin-relaxation time in undoped GaAs in the absence of a magnetic field.en_US
dc.languageEnglish
dc.language.isoenen_US
dc.publisherAMERICAN PHYSICAL SOCen_US
dc.relation
dc.rights
dc.titlePauli blockade of the electron spin flip in bulk GaAsen_US
dc.typeArticleen_US
dc.date.updated2019-04-28T03:00:23Z
dc.language.isiEN-GB
dc.journal.titlePhysical review B: Condensed matter and materials physics
dc.description.fulltextnoneen_US


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