SKM 2021 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 27: Topological Insulators and Semimetals (joint session TT/KFM)

TT 27.10: Talk

Friday, October 1, 2021, 12:30–12:45, H7

Magnetic breakdown and open orbits in LaIn₃ — •Jasper Linnartz¹, Davide Pizzirani¹, Claudius Müller¹, Sam Teicher², Ratnadwip Singha³, Sebastiaan Klemenz³, Leslie Schoop³, and Steffen Wiedmann¹ — ¹High Field Magnet Laboratory (HFML-EMFL), IMM, Radboud University, Nijmegen, the Netherlands — ²Materials Department and California Nanosystems Institute, University of California Santa Barbara, Santa Barbara, USA — ³Department of Chemistry, Princeton University, Princeton, USA

LaIn₃ which crystalizes in the AuCu₃ structure provides is a highly tunable system for emergent phenomena in condensed matter such as a monotonic increase of its critical temperature upon Sn doping. It is also considered as a model system for the heavy fermion systems CeIn₃ and PrIn₃.

We present a systematic de Haas-van Alphen quantum oscillations study on LaIn₃ up to 30 T. By measuring the temperature and angle dependence, the Fermi surface and the charge carrier properties such as the effective cyclotron masses are determined. While the finding of some pockets of the complex Fermi surface is in agreement with theoretical predictions, the observation of various high-frequency oscillations at specific angles points towards field-induced magnetic breakdown that can be described in a two-dimensional network of open orbits.