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Berlin 2015 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 34: Transport: Graphene (jointly with CPP, DS, DY, HL, MA, O)

TT 34.8: Talk

Tuesday, March 17, 2015, 11:30–11:45, A 053

Nonlocal optical excitations and dynamic shear viscosity of graphene — •Julia Link, Peter P. Orth, and Jörg Schmalian — Institute for Theoretical Condensed Matter physics, Karlsruhe Institute of Technology (KIT), 76131 Karlsruhe

We study the dynamic shear viscosity of the interacting electronic fluid of graphene in the finite frequency, collision-less regime, relevant for nonlocal optical properties. We determine the frequency dependence of the dynamic shear viscosity for non-interacting graphene and study the influence of the long-range Coulomb interaction. Finally we discuss a setup where the viscosity can be spectroscopically measured.

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