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Article: Effect of electron-phonon interaction on nonequilibrium transport in quantum dot systems

TitleEffect of electron-phonon interaction on nonequilibrium transport in quantum dot systems
Authors
KeywordsElectron-phonon interaction
Kondo-phonon satellite
Quantum dot
Spectral function
Issue Date2006
Citation
Pan Tao Ti Hsueh Pao/Chinese Journal Of Semiconductors, 2006, v. 27 SUPPL., p. 44-48 How to Cite?
AbstractThe electron-phonon interaction has important effects on the nonequilibrium transport through the semiconductor quantum dot (QD) or the single molecule transistor. Based on the improved electron-phonon disentangled scheme and the equation of motion approach of the nonequilibrium Green functions, it is found that at low temperature, the phonon sidebands in the spectral function are quite sensitive to the relative positions of the renormalized QD level and the Fermi levels in the leads, showing the broken particle-hole symmetry in the QD. The phonon satellites of the Kondo peak come from two types of spin exchange processes. In the presence of moderate Zeeman splitting, these two types of Kondo satellites can be recognized in the spin resolved spectral function. These features of the spectral functions will also manifest themselves in the nonlinear differential conductance.
Persistent Identifierhttp://hdl.handle.net/10722/147667
ISSN
2011 SCImago Journal Rankings: 0.140
References

 

DC FieldValueLanguage
dc.contributor.authorChen, Zen_HK
dc.contributor.authorLu, Hen_HK
dc.contributor.authorLu, Ren_HK
dc.contributor.authorZhu, Ben_HK
dc.date.accessioned2012-05-29T06:07:37Z-
dc.date.available2012-05-29T06:07:37Z-
dc.date.issued2006en_HK
dc.identifier.citationPan Tao Ti Hsueh Pao/Chinese Journal Of Semiconductors, 2006, v. 27 SUPPL., p. 44-48en_HK
dc.identifier.issn0253-4177en_HK
dc.identifier.urihttp://hdl.handle.net/10722/147667-
dc.description.abstractThe electron-phonon interaction has important effects on the nonequilibrium transport through the semiconductor quantum dot (QD) or the single molecule transistor. Based on the improved electron-phonon disentangled scheme and the equation of motion approach of the nonequilibrium Green functions, it is found that at low temperature, the phonon sidebands in the spectral function are quite sensitive to the relative positions of the renormalized QD level and the Fermi levels in the leads, showing the broken particle-hole symmetry in the QD. The phonon satellites of the Kondo peak come from two types of spin exchange processes. In the presence of moderate Zeeman splitting, these two types of Kondo satellites can be recognized in the spin resolved spectral function. These features of the spectral functions will also manifest themselves in the nonlinear differential conductance.en_HK
dc.languageengen_US
dc.relation.ispartofPan Tao Ti Hsueh Pao/Chinese Journal of Semiconductorsen_HK
dc.subjectElectron-phonon interactionen_HK
dc.subjectKondo-phonon satelliteen_HK
dc.subjectQuantum doten_HK
dc.subjectSpectral functionen_HK
dc.titleEffect of electron-phonon interaction on nonequilibrium transport in quantum dot systemsen_HK
dc.typeArticleen_HK
dc.identifier.emailLu, H: luhz@hku.hken_HK
dc.identifier.authorityLu, H=rp01599en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-33847780291en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33847780291&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume27en_HK
dc.identifier.issueSUPPL.en_HK
dc.identifier.spage44en_HK
dc.identifier.epage48en_HK
dc.publisher.placeChinaen_HK
dc.identifier.scopusauthoridChen, Z=9742215000en_HK
dc.identifier.scopusauthoridLu, H=24376662200en_HK
dc.identifier.scopusauthoridLu, R=26643365900en_HK
dc.identifier.scopusauthoridZhu, B=7401683321en_HK

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