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dc.contributor.authorLiao, Yu-Huai
dc.contributor.authorClimente Plasencia, Joan Ignasi
dc.contributor.authorCheng, Shun-Jen
dc.date.accessioned2012-05-16T05:59:55Z
dc.date.available2012-05-16T05:59:55Z
dc.date.issued2011-04-22
dc.identifier.citationPhysical Review B (2011) vol. 83, no. 16ca_CA
dc.identifier.issn1098-0121
dc.identifier.issn1550-235X
dc.identifier.urihttp://hdl.handle.net/10234/37460
dc.description.abstractWe present a comprehensive theoretical investigation of spin relaxation processes of excitons in photoexcited self-assembled quantum dots. The exciton spin relaxations are considered between dark- and bright-exciton states via the channels created by various spin-admixture mechanisms, including electron Rashba and Dresselhaus spin- orbital couplings (SOCs), hole linear and hole cubic SOCs, and electron hyperfine interactions, incorporated with single- and double-phonon processes. The hole-Dresselhaus SOC is identified as the dominant spin-admixture mechanism, leading to relaxation rates as fast as ∼10−2 ns−1, consistent with recent observations. Moreover, due to significant electron-hole exchange interactions, single-phonon processes are unusually dominant over two-phonon ones in a photoexcited dot even at temperatures as high as 15 K.ca_CA
dc.format.extent7 p.ca_CA
dc.format.mimetypeapplication/pdfca_CA
dc.language.isoengca_CA
dc.publisherAmerican Physical Societyca_CA
dc.rights© American Physical Societyca_CA
dc.subjectExcitonca_CA
dc.subjectSpinca_CA
dc.subjectQuantum dotsca_CA
dc.subjectElectronca_CA
dc.subject.lcshExciton theoryca_CA
dc.subject.lcshNuclear spinca_CA
dc.subject.lcshQuantum dotsca_CA
dc.subject.otherExcitonsca_CA
dc.subject.otherSpin (Física nuclear)ca_CA
dc.subject.otherPunts quànticsca_CA
dc.titleDominant channels of exciton spin relaxation in photoexcited self-assembled (In,Ga)As quantum dotsca_CA
dc.typeinfo:eu-repo/semantics/articleca_CA
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevB.83.165317
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessca_CA
dc.relation.publisherVersionhttp://link.aps.org/doi/10.1103/PhysRevB.83.165317ca_CA


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