Erlangen 2018 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 62: Poster: Quantum Optics and Photonics V
Q 62.55: Poster
Thursday, March 8, 2018, 16:15–18:15, Redoutensaal
Polaritonic Contribution to the Casimir Interaction in Graphene Systems — •Christoph Egerland1,2, Francesco Intravaia2, and Kurt Busch1,2 — 1Humboldt-Universität zu Berlin, Institut für Physik, AG Theoretische Optik & Photonik, Newtonstr. 15, 12489 Berlin, Germany — 2Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy, Max-Born-Str. 2A, 12489 Berlin, Germany
The Casimir effect is a phenomenon where two uncharged bodies placed in vacuum attract each other due to quantum or thermal fluctuations. In addition to its fundamental interest, the Casimir force also has important technological implications, since it can cause sticking or jamming between parts of nanodevices. To control these (often unwanted) effects, one can leverage on the so-called surface polaritons, i.e. material excitations living at the surface of the bodies. They indeed dominate the Casimir interaction in the limit of small separations. Recently, due to its prospective applications in nanotechnology, a lot of attention was devoted to the calculation of the Casimir force in graphene systems.
We examine in detail the contribution of the polaritonic modes to the Casimir interaction between two parallel layers of graphene. We put a special emphasis on the material model chosen to describe graphene and we consider some specific features such as a non-vanishing band gap.