Regensburg 2016 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 58: Transport: Poster Session

TT 58.42: Poster

Wednesday, March 9, 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.
D. Hagenmüller and C. Ciuti, PRL 109, 267403 (2012)
L. Chirolli, M. Polini, V. Giovannetti and A. H. MacDonald,

PRL 109, 267404 (2012)
F. M. D. Pellegrino, L. Chirolli, R. Fazio, V. Giovannetti

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