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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 19: Transport: Graphene (joint session TT, CPP, DS, DY, HL, MA, O)
CPP 19.5: Talk
Tuesday, March 17, 2015, 10:30–10:45, A 053
Fabry-Pérot interference in monolayer and bilayer graphene devices — •Ming-Hao Liu and Klaus Richter — Institut für Theoretische Physik, Universität Regensburg, D-93040 Regensburg, Germany
Recent progress on high-quality graphene device fabrications has made submicron- or even micron-scale phase-coherent phenomena in graphene experimentally observable. Hence reliable quantum transport simulations for ballistic graphene devices are nowadays highly demanded. In this talk we give an overview on how such simulations can be accurately and efficiently performed. Concrete examples of Fabry-Pérot interference in single pn junctions in suspended monolayer graphene [1], multiple pn junctions in monolayer graphene on substrate [2], and pnp junctions in bilayer graphene encapsulated by hexagonal boron nitrite [3] will be briefly shown, as well as further studies of “electron optics” in graphene.
[1] P. Rickhaus, R. Maurand, M.-H. Liu, M. Weiss, K. Richter,
and C. Schönenberger, Nature Comm. 4, 2342 (2013);
M.-H. Liu, et. al., arXiv:1407.5620 (2014).
[2] M. Drienovsky, F.-X. Schrettenbrunner, A. Sandner, D. Weiss,
J. Eroms, M.-H. Liu, F. Tkatschenko, and K. Richter,
Phys. Rev. B 89, 115421 (2014).
[3] A. Varlet, M.-H. Liu, V. Krueckl, D. Bischoff, P. Simonet,
K. Watanabe, T. Taniguchi, K. Richter, K. Ensslin, and T. Ihn,
Phys. Rev. Lett. 113, 116601 (2014).