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Article: Spin-polarized transport through a quantum dot: Anderson model with on-site Coulomb repulsion

TitleSpin-polarized transport through a quantum dot: Anderson model with on-site Coulomb repulsion
Authors
KeywordsPhysics
Issue Date2002
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B (Condensed Matter), 2002, v. 65 n. 16, article no. 165303 How to Cite?
AbstractWe report on a theoretical analysis of transport characteristics of a spin-valve system formed by a quantum dot connecting to two ferromagnetic electrodes whose magnetic moments are oriented at an angle θ with respect to each other. We pay special attention to the effects of a finite on-site Coulomb repulsion U. Using the Keldysh nonequilibrium Green’s functions we derived a formula for the current in general terms of bias, temperature, and the parameters θ,U. We have studied the local density of states and nonlinear conductance of this device in the Kondo regime at different polarization angle θ. Our results suggest that the Kondo peaks in the local density of states and in the conductance can be modulated by θ.
Persistent Identifierhttp://hdl.handle.net/10722/43351
ISSN
2001 Impact Factor: 3.07
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorSergueev, Nen_HK
dc.contributor.authorSun, QFen_HK
dc.contributor.authorGuo, Hen_HK
dc.contributor.authorWang, BGen_HK
dc.contributor.authorWang, Jen_HK
dc.date.accessioned2007-03-23T04:44:06Z-
dc.date.available2007-03-23T04:44:06Z-
dc.date.issued2002en_HK
dc.identifier.citationPhysical Review B (Condensed Matter), 2002, v. 65 n. 16, article no. 165303-
dc.identifier.issn0163-1829-
dc.identifier.urihttp://hdl.handle.net/10722/43351-
dc.description.abstractWe report on a theoretical analysis of transport characteristics of a spin-valve system formed by a quantum dot connecting to two ferromagnetic electrodes whose magnetic moments are oriented at an angle θ with respect to each other. We pay special attention to the effects of a finite on-site Coulomb repulsion U. Using the Keldysh nonequilibrium Green’s functions we derived a formula for the current in general terms of bias, temperature, and the parameters θ,U. We have studied the local density of states and nonlinear conductance of this device in the Kondo regime at different polarization angle θ. Our results suggest that the Kondo peaks in the local density of states and in the conductance can be modulated by θ.en_HK
dc.format.extent158218 bytes-
dc.format.extent25600 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/en_HK
dc.relation.ispartofPhysical Review B (Condensed Matter)-
dc.rightsCopyright 2002 by The American Physical Society. This article is available online at https://doi.org/10.1103/PhysRevB.65.165303-
dc.subjectPhysicsen_HK
dc.titleSpin-polarized transport through a quantum dot: Anderson model with on-site Coulomb repulsionen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=65&issue=16&spage=165303:1&epage=9&date=2002&atitle=Spin-polarized+transport+through+a+quantum+dot:+Anderson+model+with+on-site+Coulomb+repulsionen_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1103/PhysRevB.65.165303en_HK
dc.identifier.scopuseid_2-s2.0-0037091649-
dc.identifier.hkuros67038-
dc.identifier.volume65-
dc.identifier.issue16-
dc.identifier.spagearticle no. 165303-
dc.identifier.epagearticle no. 165303-
dc.identifier.isiWOS:000175325000067-

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