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Seminar

Quantum transport simulation for ballistic graphene devices

Wednesday, 22 April 2015, 16:30-18:00
Talk given by Dr. Ming-Hao Liu Institut für Theoretische Physik Universität Regensburg Recent progress on fabricating high quality graphene devices has strongly enhanced the electron mean free path, making micron-scale ballistic transport in graphene experimentally feasible. Quantum transport simulation based on the real-space Green's function method that can fully take into account the graphene sample and complex gating geometry therefore becomes a powerful tool in revealing and identifying the interesting physics of Dirac electron waves in transport experiments, such as Fabry-Perót interference (in suspended monolayer graphene [1] and hBN-encapsulated bilayer graphene [2]), ballistic snake states [3], and electron guiding [4]. In this talk, how to perform such realistic quantum transport simulations will be introduced at an appropriate depth, and the physics of these experiments [1-3] will be briefly discussed. [1] P. Rickhaus, R. Maurand, M.-H. Liu et al., Nat. Commun. 4, 2342 (2013). [2] A. Varlet, M.-H. Liu, V. Krueckl et al., Phys. Rev. Lett. 113, 116601 (2014). [3] P. Rickhaus, P. Makk, M.-H. Liu et al., Nat. Commun. 6, 6470 (2015). [4] P. Rickhaus et al., in preparation.
This event is part of the eventgroup INT Talks
Speaker
Dr. Ming-Hao Liu

Institut für Theoretische Physik, Universität Regensburg
http://www-app.uni-regensburg.de/Fakultaeten/Physik/Richter/People/people.php?MitID=1294
Organizer
Dr. Romain Danneau
Institute of Nanotechnology (INT)
Karlsruhe Institute of Technology (KIT)
Eggenstein-Leopoldshafen
Tel: 0721/608-28896
Mail: romain danneau does-not-exist.kit edu
Targetgroup
Interested / Everyone
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