Regensburg 2016 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 24: Transport: Weyl Semimetals

TT 24.6: Talk

Tuesday, March 8, 2016, 11:00–11:15, H18

Low energy electronic scattering processes in the topological Weyl semimetal TaAs — •Silvia Müllner¹, Peter Lemmens¹, Vladimir Gnezdilov^1,2, Raman Sankar³, and Fangcheng Chou³ — ¹IPKM, TU-BS, Braunschweig — ²ILTPE NAS, Ukraine — ³CCMS, National Taiwan Univ., Taipei, Taiwan

The topological Weyl semimetal TaAs shows Weyl points as well as topological surface states (Fermi arcs) intimately related to symmetry and strong spin orbit interaction. We find evidence for a low energy maximum in the scattering intensity that is compatible with electronic correlations in a collision dominated regime. We compare our observations with topological insulators.

Work supported by RTG-DFG 1952/1, Metrology for Complex Nanosystems and the Laboratory for Emerging Nanometrology, TU Braunschweig.