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Article: Controllable Andreev retroreflection and specular Andreev reflection in a four-terminal graphene-superconductor hybrid system

TitleControllable Andreev retroreflection and specular Andreev reflection in a four-terminal graphene-superconductor hybrid system
Authors
KeywordsAndreev reflection
Diffraction effects
Electron transport
Graphene nano-ribbon
Graphenes
Issue Date2009
PublisherAmerican Physical Society. The Journal's web site is located at http://prl.aps.org
Citation
Physical Review Letters, 2009, v. 103 n. 16, artricle no. 167003 How to Cite?
AbstractWe report the investigation of electron transport through a four-terminal graphene-superconductor hybrid system. Because of the quantum interference of the reflected holes from two graphene-superconductor interfaces with a phase difference theta, it is found that the specular Andreev reflection vanishes at theta=0 while the Andreev retroreflection disappears at theta=pi. This means that retroreflection and specular reflection can be easily controlled and separated in this device. In addition, because of the diffraction effect in the narrow graphene nanoribbon, the reflected hole can exit from both graphene terminals. As the width of nanoribbon increases, the diffraction effect gradually disappears and the reflected hole eventually exits from a particular graphene terminal depending on the type of Andreev reflection.
Persistent Identifierhttp://hdl.handle.net/10722/80531
ISSN
2015 Impact Factor: 7.645
2015 SCImago Journal Rankings: 3.731
ISI Accession Number ID
Funding AgencyGrant Number
NSFC10525418
10734110
10821403
973 Program2009CB929103
Government of HKSARHKU 704308P
Funding Information:

The work is supported by NSFC under Grants No. 10525418, No. 10734110, and No. 10821403 and by 973 Program Project No. 2009CB929103 (Q. F. S.); a RGC grant from the Government of HKSAR Grant No. HKU 704308P (J.W.).

Grants

 

DC FieldValueLanguage
dc.contributor.authorCheng, SGen_HK
dc.contributor.authorXing, Yen_HK
dc.contributor.authorWang, Jen_HK
dc.contributor.authorSun, QFen_HK
dc.date.accessioned2010-09-06T08:07:28Z-
dc.date.available2010-09-06T08:07:28Z-
dc.date.issued2009en_HK
dc.identifier.citationPhysical Review Letters, 2009, v. 103 n. 16, artricle no. 167003en_HK
dc.identifier.issn0031-9007en_HK
dc.identifier.urihttp://hdl.handle.net/10722/80531-
dc.description.abstractWe report the investigation of electron transport through a four-terminal graphene-superconductor hybrid system. Because of the quantum interference of the reflected holes from two graphene-superconductor interfaces with a phase difference theta, it is found that the specular Andreev reflection vanishes at theta=0 while the Andreev retroreflection disappears at theta=pi. This means that retroreflection and specular reflection can be easily controlled and separated in this device. In addition, because of the diffraction effect in the narrow graphene nanoribbon, the reflected hole can exit from both graphene terminals. As the width of nanoribbon increases, the diffraction effect gradually disappears and the reflected hole eventually exits from a particular graphene terminal depending on the type of Andreev reflection.-
dc.languageengen_HK
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prl.aps.orgen_HK
dc.relation.ispartofPhysical Review Lettersen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsPhysical Review Letters. Copyright © American Physical Society.en_HK
dc.subjectAndreev reflection-
dc.subjectDiffraction effects-
dc.subjectElectron transport-
dc.subjectGraphene nano-ribbon-
dc.subjectGraphenes-
dc.titleControllable Andreev retroreflection and specular Andreev reflection in a four-terminal graphene-superconductor hybrid systemen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0031-9007&volume=103&issue=16, artricle no. 167003&spage=&epage=&date=2009&atitle=Controllable+Andreev+retroreflection+and+specular+Andreev+reflection+in+a+four-terminal+graphene-superconductor+hybrid+systemen_HK
dc.identifier.emailXing, Y: xingyx@hku.hk , xyx@aphy.iphy.ac.cnen_HK
dc.identifier.emailWang, J: jianwang@hkusub.hku.hken_HK
dc.identifier.authorityWang, J=rp00799en_HK
dc.description.naturepublished_or_final_versionen_US
dc.identifier.doi10.1103/PhysRevLett.103.167003-
dc.identifier.pmid19905718-
dc.identifier.scopuseid_2-s2.0-70350112410en_US
dc.identifier.hkuros169439en_HK
dc.identifier.volume103-
dc.identifier.issue16, artricle no. 167003-
dc.identifier.isiWOS:000270899500046-
dc.relation.projectThe first principle study of local heating and heat transport in nano-devices-
dc.identifier.citeulike5955307-

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