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Dynamical polarizability of graphene beyond the Dirac cone approximation

Stauber, Tobias and Schliemann, John and Peres, N. M. R. (2010) Dynamical polarizability of graphene beyond the Dirac cone approximation. Phys. Rev. B 81, 085409.

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Other URL: http://link.aps.org/doi/10.1103/PhysRevB.81.085409


We compute the dynamical polarizability of graphene beyond the usual Dirac cone approximation, integrating over the full Brillouin zone. We find deviations at ℏω=2t (where t is the hopping parameter) which amount to a logarithmic singularity due to the Van Hove singularity and derive an approximate analytical expression. Also at low energies, we find deviations from the results obtained from the ...


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Item Type:Article
Date:4 February 2010
Institutions:Physics > Institute of Theroretical Physics > Chair Professor Grifoni > Group John Schliemann
Projects:GRK 1570, Elektronische Eigenschaften von Nanostrukturen auf Kohlenstoff-Basis
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Dewey Decimal Classification:500 Science > 530 Physics
Refereed:Yes, this version has been refereed
Created at the University of Regensburg:Yes
Deposited On:11 May 2012 09:49
Last Modified:13 Mar 2014 18:50
Item ID:24301
Owner Only: item control page


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