Regensburg 2016 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 58: Transport: Poster Session

TT 58.42: Poster

Mittwoch, 9. März 2016, 15:00–18:30, Poster D

Landau quantized Dirac electrons in a photon cavity — •Lisa Heße and Klaus Richter — Universität Regensburg, Institut für Theoretische Physik, 93040 Regensburg, Germany

We consider Landau quantized monolayer graphene exposed to an electromagnetic cavity mode. Due to the large degeneracy and Dirac-type characteristics of the Landau-level spectrum graphene is meant to show collective excitation effects under the influence of the additional radiation field in a resonant strong light-matter-coupling regime [1]. The controversially discussed [1, 2, 3] question about the existence of such Dicke-type superradiant quantum phases and connected phenomena due to photon-induced cyclotron transitions opens a challenging subfield of research in graphene. On the basis of a realistic tight-binding simulation we study the interaction of resonant cavity photon modes with Landau quantized states in graphene focusing on the spectral properties of this hybrid system.
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L. Chirolli, M. Polini, V. Giovannetti and A. H. MacDonald,

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and M. Polini, PRB 89, 165406 (2014)