Finite-temperature Casimir effect for graphene

By I. Fialkovsky, V. Marachevsky, D. Vassilevich. 2011

150 citations recorded by the source corpus.

We adopt the Dirac model for quasiparticles in graphene and calculate the finite temperature Casimir interaction between a suspended graphene layer and a parallel conducting surface. We find that at high temperature the Casimir interaction in such system is just one half of that for two ideal conductors separated by the same distance. In this limit single graphene layer behaves exactly as a Drude metal. In particular, the contribution of the TE mode is suppressed, while one of the TM mode saturates the ideal metal value. Behaviour of the Casimir interaction for intermediate temperatures and separations accessible for an experiment is studied in some detail. We also find an interesting interplay between two fundamental constants of graphene physics: the fine structure constant and the Fermi velocity.

Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry, Statistical and Nonlinear Physics

View Paper: https://www.semanticscholar.org/paper/9e3b97e2a51c1244a61d6416835bbfa0c1e785b9

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In Atomic and Molecular Physics, and Optics

In Materials Chemistry

In Statistical and Nonlinear Physics

Citations in the corpus

Materials perspective on Casimir and van der Waals interactions (2015, methodology): “(Fialkovsky et al., 2011) have used the polarization tensor and corresponding reflection coefficients to express the dominating thermal fluctuations regime in terms of the fine structure constant α as kBTd~c α lnα−1 2ζ(3) .”