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Article: Excitation gap in the fractional quantum Hall effect: Finite layer thickness corrections

TitleExcitation gap in the fractional quantum Hall effect: Finite layer thickness corrections
Authors
Issue Date1986
PublisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/
Citation
Physical Review B, 1986, v. 33 n. 4, p. 2903-2905 How to Cite?
AbstractExcitation energy for the ν=(1/3) fractional quantum Hall effect state is calculated by exact numerical diagonalization for a small number of electrons in the spherical geometry keeping the finite width of the quasi-two-dimensional layer in the calculation. It is found that for actual experimental systems finite layer thickness corrections reduce the excitation gap by as much as a factor of two, bringing experiment and theory much closer together. Calculated thickness effect also qualitatively explains the experimentally observed saturation in the activation energy at the highest magnetic fields. © 1986 The American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/174660
ISSN
2001 Impact Factor: 3.07
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhang, FCen_US
dc.contributor.authorDas Sarma, Sen_US
dc.date.accessioned2012-11-26T08:46:46Z-
dc.date.available2012-11-26T08:46:46Z-
dc.date.issued1986en_US
dc.identifier.citationPhysical Review B, 1986, v. 33 n. 4, p. 2903-2905en_US
dc.identifier.issn0163-1829en_US
dc.identifier.urihttp://hdl.handle.net/10722/174660-
dc.description.abstractExcitation energy for the ν=(1/3) fractional quantum Hall effect state is calculated by exact numerical diagonalization for a small number of electrons in the spherical geometry keeping the finite width of the quasi-two-dimensional layer in the calculation. It is found that for actual experimental systems finite layer thickness corrections reduce the excitation gap by as much as a factor of two, bringing experiment and theory much closer together. Calculated thickness effect also qualitatively explains the experimentally observed saturation in the activation energy at the highest magnetic fields. © 1986 The American Physical Society.en_US
dc.languageengen_US
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prb.aps.org/en_US
dc.relation.ispartofPhysical Review Ben_US
dc.titleExcitation gap in the fractional quantum Hall effect: Finite layer thickness correctionsen_US
dc.typeArticleen_US
dc.identifier.emailZhang, FC: fuchun@hkucc.hku.hken_US
dc.identifier.authorityZhang, FC=rp00840en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1103/PhysRevB.33.2903en_US
dc.identifier.scopuseid_2-s2.0-0004497829en_US
dc.identifier.volume33en_US
dc.identifier.issue4en_US
dc.identifier.spage2903en_US
dc.identifier.epage2905en_US
dc.identifier.isiWOS:A1986A018700114-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridZhang, FC=14012468800en_US
dc.identifier.scopusauthoridDas Sarma, S=35459638700en_US

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