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Article: Many-electron effects on ballistic transport

TitleMany-electron effects on ballistic transport
Authors
KeywordsPhysics
Issue Date1995
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B (Condensed Matter), 1995, v. 52 n. 4, p. 2738-2746 How to Cite?
AbstractA Thomas-Fermi-Dirac–von Weizsäcker density-functional formalism is used to study the effects of many-electron Coulomb interactions on quantum transport through two-dimensional semiconductor nanostructures. The electron density is obtained by direct minimization of the total energy functional, and an effective potential for the electrons is determined as a functional of the density self-consistently. Transmission coefficient and conductance are computed with the effective potential included. The electron density distribution as well as the effective potential are strongly affected by the average electron density and the distance between the two-dimensional electron gas and the positive background charge. The transmission property of a stadium-shaped open quantum-dot system is investigated by varying these system parameters. The electron ballistic transport problem is solved in the presence of the many-electron effective potential and results are compared to that of the single-electron approximation. Some important differences are observed.
Persistent Identifierhttp://hdl.handle.net/10722/43435
ISSN
2001 Impact Factor: 3.07
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWang, Yen_HK
dc.contributor.authorWang, Jen_HK
dc.contributor.authorGuo, Hen_HK
dc.contributor.authorZaremba, Een_HK
dc.date.accessioned2007-03-23T04:45:38Z-
dc.date.available2007-03-23T04:45:38Z-
dc.date.issued1995en_HK
dc.identifier.citationPhysical Review B (Condensed Matter), 1995, v. 52 n. 4, p. 2738-2746en_HK
dc.identifier.issn0163-1829en_HK
dc.identifier.urihttp://hdl.handle.net/10722/43435-
dc.description.abstractA Thomas-Fermi-Dirac–von Weizsäcker density-functional formalism is used to study the effects of many-electron Coulomb interactions on quantum transport through two-dimensional semiconductor nanostructures. The electron density is obtained by direct minimization of the total energy functional, and an effective potential for the electrons is determined as a functional of the density self-consistently. Transmission coefficient and conductance are computed with the effective potential included. The electron density distribution as well as the effective potential are strongly affected by the average electron density and the distance between the two-dimensional electron gas and the positive background charge. The transmission property of a stadium-shaped open quantum-dot system is investigated by varying these system parameters. The electron ballistic transport problem is solved in the presence of the many-electron effective potential and results are compared to that of the single-electron approximation. Some important differences are observed.en_HK
dc.format.extent1662462 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). Copyright © American Physical Society.en_HK
dc.subjectPhysicsen_HK
dc.titleMany-electron effects on ballistic transporten_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0163-1829&volume=52&issue=4&spage=2738&epage=2746&date=1995&atitle=Many-electron+effects+on+ballistic+transporten_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1103/PhysRevB.52.2738en_HK
dc.identifier.scopuseid_2-s2.0-0000425401-
dc.identifier.hkuros9269-
dc.identifier.isiWOS:A1995RM15400074-

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