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DS: Fachverband Dünne Schichten

DS 23: Topological insulators: Theory (HL with DS/MA/O/TT)

DS 23.1: Vortrag

Mittwoch, 18. März 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.