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dc.contributor.authorRosenstein, B.en_US
dc.contributor.authorLewkowicz, M.en_US
dc.contributor.authorManiv, T.en_US
dc.date.accessioned2019-04-03T06:43:00Z-
dc.date.available2019-04-03T06:43:00Z-
dc.date.issued2013-02-08en_US
dc.identifier.issn0031-9007en_US
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevLett.110.066602en_US
dc.identifier.urihttp://hdl.handle.net/11536/21221-
dc.description.abstractThe long-standing controversy concerning the effect of electron-electron interaction on the electrical conductivity of an ideal graphene sheet is settled. Performing the calculation directly in the tight binding approach without the usual prior reduction to the massless Dirac (Weyl) theory, it is found that, to leading order in the interaction strength alpha = e(2)/(h) over barv(0), the dc conductivity sigma/sigma(0) = 1 + C alpha + O(alpha(2)) is significantly enhanced with respect to the independent-electron result sigma(0), i.e., with the value C = 0.26. The ambiguity characterizing the various existing approaches is nontrivial and related to the chiral anomaly in the system. In order to separate the energy scales in a model with massless fermions, contributions from regions of the Brillouin zone away from the Dirac points have to be accounted for. Experimental consequences of the relatively strong interaction effect are briefly discussed. DOI: 10.1103/PhysRevLett.110.066602en_US
dc.language.isoen_USen_US
dc.titleChiral Anomaly and Strength of the Electron-Electron Interaction in Grapheneen_US
dc.typeArticleen_US
dc.identifier.doi10.1103/PhysRevLett.110.066602en_US
dc.identifier.journalPHYSICAL REVIEW LETTERSen_US
dc.citation.volume110en_US
dc.citation.issue6en_US
dc.citation.spage0en_US
dc.citation.epage0en_US
dc.contributor.department電子物理學系zh_TW
dc.contributor.departmentDepartment of Electrophysicsen_US
dc.identifier.wosnumberWOS:000314770800008en_US
dc.citation.woscount23en_US
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