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dc.contributor.authorHsiao, J. H.en_US
dc.contributor.authorLiu, K. M.en_US
dc.contributor.authorHsu, S. Y.en_US
dc.contributor.authorHong, T. M.en_US
dc.date.accessioned2019-04-03T06:42:36Z-
dc.date.available2019-04-03T06:42:36Z-
dc.date.issued2009-01-01en_US
dc.identifier.issn1098-0121en_US
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevB.79.033304en_US
dc.identifier.urihttp://hdl.handle.net/11536/7774-
dc.description.abstractWe demonstrate that three conductance features, 0.5 and 0.7G(0) plateaus and a dip at 0.5G(0), observed in quantum point contacts (QPCs) can be consistently explained by the Rashba interaction in the nonuniform electric field created by the side gates along the transport direction. A quantity gamma is defined which depends on the extent of this nonuniformity and the electron density. A short QPC tends to have a small gamma. Only when gamma is large will the Rashba interaction produce a potential well deep enough to localize the electron. This provides the bound state that forms the Kondo resonance with the tunneling electrons. We propose to compare the medium/long QPC to small/large quantum dots, which are governed by the Kondo physics and the Coulomb blockade, respectively. The relation between 0.7 anomaly and the side-gate voltage, length of QPC, and temperature can all be determined to agree qualitatively with the experiments.en_US
dc.language.isoen_USen_US
dc.subjectCoulomb blockadeen_US
dc.subjectKondo effecten_US
dc.subjectquantum dotsen_US
dc.subjectquantum point contactsen_US
dc.subjectresonant tunnellingen_US
dc.title0.7 anomaly due to the Rashba interaction in a nonuniform electric fielden_US
dc.typeArticleen_US
dc.identifier.doi10.1103/PhysRevB.79.033304en_US
dc.identifier.journalPHYSICAL REVIEW Ben_US
dc.citation.volume79en_US
dc.citation.issue3en_US
dc.citation.spage0en_US
dc.citation.epage0en_US
dc.contributor.department電子物理學系zh_TW
dc.contributor.departmentDepartment of Electrophysicsen_US
dc.identifier.wosnumberWOS:000262978200020en_US
dc.citation.woscount11en_US
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