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Article: Broken-symmetry states of dirac fermions in graphene with a partially filled high landau level

TitleBroken-symmetry states of dirac fermions in graphene with a partially filled high landau level
Authors
KeywordsElectron energy levels
Fermions
Light scattering
Optical correlation
Order disorder transitions
Issue Date2008
PublisherAmerican Physical Society. The Journal's web site is located at http://prl.aps.org
Citation
Physical Review Letters, 2008, v. 100 n. 11, article no. 116802 How to Cite?
AbstractWe report on numerical study of the Dirac fermions in partially filled N=3 Landau level (LL) in graphene. At half-filling, the equal-time density-density correlation function displays sharp peaks at nonzero wave vectors +/-q*. Finite-size scaling shows that the peak value grows with electron number and diverges in the thermodynamic limit, which suggests an instability toward a charge density wave. A symmetry broken stripe phase is formed at large system size limit, which is robust against perturbation from disorder scattering. Such a quantum phase is experimentally observable through transport measurements. Associated with the special wave functions of the Dirac LL, both stripe and bubble phases become possible candidates for the ground state of the Dirac fermions in graphene with lower filling factors in the N=3 LL.
Persistent Identifierhttp://hdl.handle.net/10722/161511
ISSN
2015 Impact Factor: 7.645
2015 SCImago Journal Rankings: 3.731
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWang, H-
dc.contributor.authorSheng, DN-
dc.contributor.authorSheng, L-
dc.contributor.authorHaldane, FDM-
dc.date.accessioned2012-08-30T08:02:26Z-
dc.date.available2012-08-30T08:02:26Z-
dc.date.issued2008-
dc.identifier.citationPhysical Review Letters, 2008, v. 100 n. 11, article no. 116802-
dc.identifier.issn0031-9007-
dc.identifier.urihttp://hdl.handle.net/10722/161511-
dc.description.abstractWe report on numerical study of the Dirac fermions in partially filled N=3 Landau level (LL) in graphene. At half-filling, the equal-time density-density correlation function displays sharp peaks at nonzero wave vectors +/-q*. Finite-size scaling shows that the peak value grows with electron number and diverges in the thermodynamic limit, which suggests an instability toward a charge density wave. A symmetry broken stripe phase is formed at large system size limit, which is robust against perturbation from disorder scattering. Such a quantum phase is experimentally observable through transport measurements. Associated with the special wave functions of the Dirac LL, both stripe and bubble phases become possible candidates for the ground state of the Dirac fermions in graphene with lower filling factors in the N=3 LL.-
dc.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at http://prl.aps.org-
dc.relation.ispartofPhysical Review Letters-
dc.rightsPhysical Review Letters. Copyright © American Physical Society.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectElectron energy levels-
dc.subjectFermions-
dc.subjectLight scattering-
dc.subjectOptical correlation-
dc.subjectOrder disorder transitions-
dc.titleBroken-symmetry states of dirac fermions in graphene with a partially filled high landau levelen_US
dc.typeArticleen_US
dc.identifier.emailWang, H: wangh75@hku.hk-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevLett.100.116802-
dc.identifier.pmid18517810-
dc.identifier.scopuseid_2-s2.0-41449099540-
dc.identifier.hkuros204027-
dc.identifier.volume100-
dc.identifier.issue11, article no. 116802-
dc.identifier.isiWOS:000254292300050-
dc.publisher.placeUnited States-

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