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Article: AC transport through a resonant level between ferromagnetic electrodes

TitleAC transport through a resonant level between ferromagnetic electrodes
Authors
KeywordsPhysics
Issue Date2004
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B (Condensed Matter and Materials Physics), 2004, v. 70 n. 20, p. 205316:1-8 How to Cite?
AbstractWe report the investigation of the spin-valve effect through a resonant level between a ferromagnetic electrode in the presence of an external ac bias. We use the current conserving and gauge invariant theory developed by Büttiker to calculate the dynamic conductance. Specifically, we have calculated the tunneling magnetoresistance (TMR) ratio as a function of various system parameters such as the angle between magnetization of the left and right leads, ac frequency, and the Fermi energy. We found that the TMR ratio can be modulated by ac frequency. At large frequency, the TMR ratio can be negative.
Persistent Identifierhttp://hdl.handle.net/10722/43441
ISSN
2014 Impact Factor: 3.736
2015 SCImago Journal Rankings: 1.933
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLui, CKen_HK
dc.contributor.authorWang, BGen_HK
dc.contributor.authorWang, Jen_HK
dc.date.accessioned2007-03-23T04:45:45Z-
dc.date.available2007-03-23T04:45:45Z-
dc.date.issued2004en_HK
dc.identifier.citationPhysical Review B (Condensed Matter and Materials Physics), 2004, v. 70 n. 20, p. 205316:1-8en_HK
dc.identifier.issn1098-0121en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43441-
dc.description.abstractWe report the investigation of the spin-valve effect through a resonant level between a ferromagnetic electrode in the presence of an external ac bias. We use the current conserving and gauge invariant theory developed by Büttiker to calculate the dynamic conductance. Specifically, we have calculated the tunneling magnetoresistance (TMR) ratio as a function of various system parameters such as the angle between magnetization of the left and right leads, ac frequency, and the Fermi energy. We found that the TMR ratio can be modulated by ac frequency. At large frequency, the TMR ratio can be negative.en_HK
dc.format.extent203672 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.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsPhysical Review B (Condensed Matter and Materials Physics). Copyright © American Physical Society.en_HK
dc.subjectPhysicsen_HK
dc.titleAC transport through a resonant level between ferromagnetic electrodesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=70&issue=20&spage=205316:1&epage=8&date=2004&atitle=AC+transport+through+a+resonant+level+between+ferromagnetic+electrodesen_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1103/PhysRevB.70.205316en_HK
dc.identifier.scopuseid_2-s2.0-42749103396-
dc.identifier.hkuros96363-
dc.identifier.isiWOS:000225478600081-

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