Confinement engineering of s-d exchange interactions in GaMnAs quantum wells

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dc.creatorStern, N. P.
dc.creatorMyers, R. C.
dc.creatorPoggio, M.
dc.creatorGossard, A. C.
dc.creatorAwschalom, D. D.
dc.date2006-04-25
dc.date.accessioned2026-07-07T08:37:47Z
dc.date.available2026-07-07T08:37:47Z
dc.descriptionRecent measurements of coherent electron spin dynamics reveal an antiferromagnetic s-d exchange coupling between conduction band electrons and electrons localized on Mn{2+} impurities in GaMnAs quantum wells. Here we discuss systematic measurements of the s-d exchange interaction in GaMnAs/AlGaAs quantum wells with different confinement potentials using time-resolved Kerr rotation. Extending previous investigations of the dependence of the s-d exchange, N{0}alpha, on well width, we find that its magnitude also depends on well depth. Both phenomena reduce to a general dependence on confinement energy, described by a band-mixing model of confinement-induced kinetic exchange in the conduction band.
dc.description4 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0604576
dc.identifierhttp://arxiv.org/abs/cond-mat/0604576
dc.identifierPhys. Rev. B 75, 045329 (2007)
dc.identifierdoi:10.1103/PhysRevB.75.045329
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/140524
dc.subjectMesoscale and Nanoscale Physics
dc.subjectMaterials Science
dc.titleConfinement engineering of s-d exchange interactions in GaMnAs quantum wells
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