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dc.contributor.authorTahir, Muhammad
dc.contributor.authorSabeeh, K.
dc.contributor.authorSchwingenschlögl, Udo
dc.contributor.authorShaukat, A.
dc.date.accessioned2014-04-13T14:37:58Z
dc.date.available2014-04-13T14:37:58Z
dc.date.issued2013-12-11
dc.identifier.citationTahir M, Sabeeh K, Shaukat A, Schwingenschlögl U (2013) Theory of substrate, Zeeman, and electron-phonon interaction effects on the quantum capacitance in graphene. Journal of Applied Physics 114: 223711. doi:10.1063/1.4842755.
dc.identifier.issn00218979
dc.identifier.doi10.1063/1.4842755
dc.identifier.urihttp://hdl.handle.net/10754/315783
dc.description.abstractSince the discovery of graphene, a lot of interest has been attracted by the zeroth Landau level, which has no analog in the conventional two dimensional electron gas. Recently, lifting of the spin and valley degeneracies has been confirmed experimentally by capacitance measurements, while in transport experiments, this is difficult due to the scattering in the device. In this context, we model interaction effects on the quantum capacitance of graphene in the presence of a perpendicular magnetic field, finding good agreement with experiments. We demonstrate that the valley degeneracy is lifted by the substrate and by Kekule distortion, whereas the spin degeneracy is lifted by Zeeman interaction. The two cases can be distinguished by capacitance measurements.
dc.language.isoen
dc.publisherAIP Publishing
dc.relation.urlhttp://scitation.aip.org/content/aip/journal/jap/114/22/10.1063/1.4842755
dc.rightsArchived with thanks to Journal of Applied Physics
dc.titleTheory of substrate, Zeeman, and electron-phonon interaction effects on the quantum capacitance in graphene
dc.typeArticle
dc.contributor.departmentComputational Physics and Materials Science (CPMS)
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalJournal of Applied Physics
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionDepartment of Physics, University of Sargodha, Sargodha 40100, Pakistan
dc.contributor.institutionDepartment of Physics, Quaid-i-Azam University, Islamabad 45320, Pakistan
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
kaust.personTahir, Muhammad
kaust.personSchwingenschlögl, Udo
refterms.dateFOA2018-06-14T04:16:57Z
dc.date.published-online2013-12-11
dc.date.published-print2013-12-14


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