Quantum Critical Transport in Clean Graphene

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Quantum Critical Transport in Clean Graphene

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dc.contributor.author Fritz, Lars
dc.contributor.author Sachdev, Subir
dc.contributor.author Schmalian, Jörg
dc.contributor.author Müller, Markus
dc.date.accessioned 2012-01-10T15:22:36Z
dc.date.issued 2008
dc.identifier.citation Fritz, Lars, Jörg Schmalian, Markus Müller, and Subir Sachdev. 2008. Quantum critical transport in clean graphene. Physical Review B 78(8): 085416. en_US
dc.identifier.issn 1550-235X en_US
dc.identifier.uri http://nrs.harvard.edu/urn-3:HUL.InstRepos:7399176
dc.description.abstract We describe electrical transport in ideal single-layer graphene at zero applied gate voltage. There is a crossover from collisionless transport at frequencies larger than \((k_{B}T/\hbar\) (\(T\) is the temperature) to collision-dominated transport at lower frequencies. The dc conductivity is computed by the solution of a quantum Boltzmann equation. Due to a logarithmic singularity in the collinear scattering amplitude (a consequence of relativistic dispersion in two dimensions), quasiparticles and quasiholes moving in the same direction tend to an effective equilibrium distribution whose parameters depend on the direction of motion. This property allows us to find the nonequilibrium distribution functions and the quantum critical conductivity exactly to leading order in 1/|ln(\(\alpha\))|, where \(\alpha\) is the coupling constant characterizing the Coulomb interactions. en_US
dc.description.sponsorship Physics en_US
dc.language.iso en_US en_US
dc.publisher American Physical Society en_US
dc.relation.isversionof doi://10.1103/PhysRevB.78.085416 en_US
dc.relation.hasversion http://arxiv.org/abs/0802.4289v2 en_US
dash.license OAP
dc.subject strongly correlated electrons
dc.subject superconductivity
dc.title Quantum Critical Transport in Clean Graphene en_US
dc.type Journal Article en_US
dc.description.version Version of Record en_US
dc.relation.journal Physical Review B en_US
dash.depositing.author Sachdev, Subir
dc.date.available 2012-01-10T15:22:36Z

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  • FAS Scholarly Articles [7374]
    Peer reviewed scholarly articles from the Faculty of Arts and Sciences of Harvard University

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