Regensburg 2019 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

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

TT 56.9: Vortrag

Donnerstag, 4. April 2019, 17:15–17:30, H2

Comparative analysis of the effects of pressure on Bi, NbP and Cd₃As₂ — •Aleksandar Vasiljković¹, Filip Orbanić², Mario Novak², Malte Grosche¹, and Ivan Kokanović^2,1 — ¹Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, United Kingdom — ²Department of Physics, Faculty of Science, University of Zagreb, 10002 Zagreb, Croatia

Bismuth is a non-topological low carrier density semimetal, which has been investigated for a long time [1]. Cd₃As₂ is a symmetry-protected three dimensional Dirac semimetal with high carrier mobility [2]. Shubnikov-de Haas oscillations have previously been reported with frequencies of around 55 T, corresponding to tiny Fermi surface pockets in a semimetallic band structure [3]. NbP is a Weyl semimetal with large magnetoresistance and very high mobility[4]. We present a comparative analysis of the Shubnikov-de Haas oscillations of these three materials under pressure.
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