Berlin 2015 – scientific programme
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DS: Fachverband Dünne Schichten
DS 23: Topological insulators: Theory (HL with DS/MA/O/TT)
DS 23.1: Talk
Wednesday, March 18, 2015, 09:30–09:45, ER 270
Weyl and Dirac semimetals: A platform for new interface phenomena — •Adolfo G. Grushin1, Jorn W. F. Venderbos2, and Jens H. Bardarson3 — 1Max Planck Institute for the physics of Complex Systems, Dresden, Germany — 2Massachusetts Institute of Technology, Cambridge, MA, USA — 3Max Planck Institute for the physics of Complex Systems, Dresden, Germany
The Weyl semimetal (WSM) state is sometimes loosely referred to as the three-dimensional cousin of graphene since its low energy theory is described by an even number of copies of the Weyl Hamiltonian. Closely related to WSM, the Dirac semimetals hosts the Weyl nodes at the same point in the Brillouin Zone and it is realised in Cd3As2 and Na3Bi compounds. In this talk I will explore the rich surface state physics that these states can host and how can it be probed, including coexistence of Dirac and Fermi arc states at the topological insulator-weyl semimetal interfaces as well as signatures of the chiral anomaly.