Regensburg 2019 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 56: Topological Semimetals - Experiment (joint session TT/MA)

TT 56.7: Vortrag

Donnerstag, 4. April 2019, 16:45–17:00, H2

Effect of inversion symmetry on the excitations in WP₂ — •Dirk Wulferding^1,2, Peter Lemmens^1,2, Yurii Pashkevich^1,3, Tanya Shevtsova³, Claudia Felser⁴, and Chandra Shekhar⁴ — ¹IPKM, TU-BS, Braunschweig, Germany — ²LENA, TU-BS, Braunschweig, Germany — ³Galkin DonFTI, Kyiv, Ukraine — ⁴MPI CPfS, Dresden, Germany

The two structural modifications of WP₂, one with and one without a center of inversion, allow to probe the effect of global symmetry on a Weyl semimetal. In our report we uncover phonon anomalies as well as electronic fluctuation of both phases using Raman scattering and compare their impact on anomalous charge transport [1,2,3].

Work supported by QUANOMET NL-4 and DFG LE967/16-1.
Kumar et al., Nat. Commun. 8, 1642 (2017)
Gooth el al., arXiv:1706.05925 (2017)
Du et al., PRB 97, 245101 (2018)