Theory of induced superconductivity in graphene

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Presentation transcript:

Theory of induced superconductivity in graphene Mikhail A. Skvortsov Mikhail V. Feigel’man Konstantin S. Tikhonov Landau Institute, Moscow Pis'ma v ZhETF 88, 780 (2008) [JETP Lett. 88, 747 (2008)]

Graphene + superconducting islands

Graphene

Superconductive proximity effect in graphene

Usadel equation in graphene

Josephson coupling via disordered graphene

Thermal phase transition

Transition temperature vs GT

Superfluid density below Tc ?

Spectral gap

Spectral gap vs GT

Spectral gap

Spectral gap in an irregular system

Two-energy-scale superconductivity

Magnetic field effect (low T, low H)

Magnetic field effect (low T, high H)

Phase diagram ?

Experiment: Tin islands on graphene

Experiment: Tin islands on graphene

Summary