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Article: Conductance of a quantum point contact in the presence of a scanning probe microscope tip

TitleConductance of a quantum point contact in the presence of a scanning probe microscope tip
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 And Materials Physics, 2002, v. 65 n. 20, p. 2053211-2053216 How to Cite?
AbstractUsing the recursive Green's-function technique, we study the coherent electron conductance of a quantum point contact in the presence of a scanning probe microscope tip. Images of the coherent fringe inside a quantum point contact for different widths are obtained. It is found that the conductance of a specific channel is reduced while other channels are not affected, as long as the tip is located at the positions corresponding to that channel. Moreover, the coherent fringe is smoothed out by increasing the temperature or the voltage across the device. Our results are consistent with the experiments reported by Topinka et al. [Science 289, 2323 (2000)].
Persistent Identifierhttp://hdl.handle.net/10722/43356
ISSN
2001 Impact Factor: 3.07
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorHe, GPen_HK
dc.contributor.authorZhu, SLen_HK
dc.contributor.authorWang, ZDen_HK
dc.date.accessioned2007-03-23T04:44:11Z-
dc.date.available2007-03-23T04:44:11Z-
dc.date.issued2002en_HK
dc.identifier.citationPhysical Review B - Condensed Matter And Materials Physics, 2002, v. 65 n. 20, p. 2053211-2053216en_HK
dc.identifier.issn0163-1829en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43356-
dc.description.abstractUsing the recursive Green's-function technique, we study the coherent electron conductance of a quantum point contact in the presence of a scanning probe microscope tip. Images of the coherent fringe inside a quantum point contact for different widths are obtained. It is found that the conductance of a specific channel is reduced while other channels are not affected, as long as the tip is located at the positions corresponding to that channel. Moreover, the coherent fringe is smoothed out by increasing the temperature or the voltage across the device. Our results are consistent with the experiments reported by Topinka et al. [Science 289, 2323 (2000)].en_HK
dc.format.extent672851 bytes-
dc.format.extent45056 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 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.subjectPhysicsen_HK
dc.titleConductance of a quantum point contact in the presence of a scanning probe microscope tipen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=65&issue=20&spage=205321:1&epage=6&date=2002&atitle=Conductance+of+a+quantum+point+contact+in+the+presence+of+a+scanning+probe+microscope+tipen_HK
dc.identifier.emailWang, ZD: zwang@hkucc.hku.hken_HK
dc.identifier.authorityWang, ZD=rp00802en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1103/PhysRevB.65.205321en_HK
dc.identifier.scopuseid_2-s2.0-0037095517en_HK
dc.identifier.hkuros72545-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037095517&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume65en_HK
dc.identifier.issue20en_HK
dc.identifier.spage2053211en_HK
dc.identifier.epage2053216en_HK
dc.identifier.isiWOS:000176066600077-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridHe, GP=36140152800en_HK
dc.identifier.scopusauthoridZhu, SL=34972495900en_HK
dc.identifier.scopusauthoridWang, ZD=14828459100en_HK

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