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Article: Double quantum dot as detector of spin bias

TitleDouble quantum dot as detector of spin bias
Authors
Issue Date2008
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B - Condensed Matter And Materials Physics, 2008, v. 77 n. 19 How to Cite?
AbstractIt was proposed that a double quantum dot can be used as a detector of the spin bias. Electron transport through a double quantum dot is theoretically investigated when a pure spin bias is applied on two conducting leads in contact with the quantum dot. It is found that the spin polarization in the left and right dots may be spontaneously induced, while the intradot levels are located within the spin bias window and breaks the left-right symmetry of the two quantum dots. As a result, a large current emerges. For an open external circuit, a charge bias instead of a charge current will be induced at equilibrium, which is believed to be measurable according to the current nanotechnology. This method may provide a practical and whole electrical approach to detect the spin bias (or the spin current) by measuring the charge bias or current in a double quantum dot. © 2008 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/80808
ISSN
2014 Impact Factor: 3.736
2015 SCImago Journal Rankings: 1.933
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorSun, QFen_HK
dc.contributor.authorXing, Yen_HK
dc.contributor.authorShen, SQen_HK
dc.date.accessioned2010-09-06T08:10:30Z-
dc.date.available2010-09-06T08:10:30Z-
dc.date.issued2008en_HK
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 2008, v. 77 n. 19en_HK
dc.identifier.issn1098-0121en_HK
dc.identifier.urihttp://hdl.handle.net/10722/80808-
dc.description.abstractIt was proposed that a double quantum dot can be used as a detector of the spin bias. Electron transport through a double quantum dot is theoretically investigated when a pure spin bias is applied on two conducting leads in contact with the quantum dot. It is found that the spin polarization in the left and right dots may be spontaneously induced, while the intradot levels are located within the spin bias window and breaks the left-right symmetry of the two quantum dots. As a result, a large current emerges. For an open external circuit, a charge bias instead of a charge current will be induced at equilibrium, which is believed to be measurable according to the current nanotechnology. This method may provide a practical and whole electrical approach to detect the spin bias (or the spin current) by measuring the charge bias or current in a double quantum dot. © 2008 The American Physical Society.en_HK
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 and Materials Physicsen_HK
dc.rightsPhysical Review B (Condensed Matter and Materials Physics). Copyright © American Physical Society.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleDouble quantum dot as detector of spin biasen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=77&issue=19, article no. 195313&spage=195313&epage=1&date=2008&atitle=Double+quantum+dot+as+detector+of+spin+biasen_HK
dc.identifier.emailXing, Y: xingyx@hku.hken_HK
dc.identifier.emailShen, SQ: sshen@hkucc.hku.hken_HK
dc.identifier.authorityXing, Y=rp00819en_HK
dc.identifier.authorityShen, SQ=rp00775en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevB.77.195313en_HK
dc.identifier.scopuseid_2-s2.0-43949117452en_HK
dc.identifier.hkuros145580en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-43949117452&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume77en_HK
dc.identifier.issue19en_HK
dc.identifier.spage195313-1-
dc.identifier.epage195313-6-
dc.identifier.isiWOS:000256971600092-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridSun, QF=34572810700en_HK
dc.identifier.scopusauthoridXing, Y=9639175800en_HK
dc.identifier.scopusauthoridShen, SQ=7403431266en_HK

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