Suspended graphene films and their Casimir interaction with ideal conductor

10/2009; DOI: 10.1142/9789814289931_0029
Source: arXiv


We adopt the Dirac model for graphene and calculate the Casimir interaction energy between a plane suspended graphene sample and a parallel plane ideal conductor. We employ both the Quantum Field Theory (QFT) approach, and the Lifshitz formula generalizations. The first approach turns out to be the leading order in the coupling constant of the second one. The Casimir interaction for this system appears to be rather weak but experimentally measurable. It exhibits a strong dependence on the mass of the quasi-particles in graphene. Comment: 5 pages, 1 fig., presented at the Ninth Conference on Quantum Field Theory under the influence of External Conditions, Oklahoma, 2009

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Available from: Ignat V. Fialkovsky
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    ABSTRACT: The low-energy quasi-excitations in graphene are known to be described as Dirac fermions in 2+1 dimensions. Adopting field-theoretical approach we investigate the interaction of these quasi-particles with 3+1 dimensional electromagnetic field focusing on the optical properties of suspended graphene layers and their Casimir interaction with ideal conductor. The magnitude of predicted effects (the rotation of polarization of light and the Casimir force) appears to be well within modern experimental capabilities. Comment: Prepared for presentation at the First European Conference on Nanofilm, March 22-25, 2010.
    Full-text · Article · Mar 2010