Fermi surface of the chiral topological semimetal PtGa
Schwarze B, Uhlarz M, Hornung J, Chattopadhyay S, Manna K, Shekhar C, Felser C, Wosnitza J (2022)
Publication Type: Journal article
Publication year: 2022
Journal
Book Volume: 34
Article Number: 425502
Journal Issue: 42
Abstract
PtGa is a topological semimetal with giant spin-split Fermi arcs. Here, we report on angular-dependent de Haas-van Alphen (dHvA) measurements combined with band-structure calculations to elucidate the details of the bulk Fermi surface of PtGa. The strong spin-orbit coupling leads to eight bands crossing the Fermi energy that form a multitude of Fermi surfaces with closed extremal orbits and results in very rich dHvA spectra. The large number of experimentally observed dHvA frequencies make the assignment to the equally large number of calculated dHvA orbits challenging. Nevertheless, we find consistency between experiment and calculations verifying the topological character with maximal Chern number of the spin-split Fermi surface.
Involved external institutions
Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
Germany (DE)
Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids
Germany (DE)
Germany (DE)
Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids
Germany (DE)
How to cite
APA:
Schwarze, B., Uhlarz, M., Hornung, J., Chattopadhyay, S., Manna, K., Shekhar, C.,... Wosnitza, J. (2022). Fermi surface of the chiral topological semimetal PtGa. Journal of Physics: Condensed Matter, 34(42). https://doi.org/10.1088/1361-648X/ac87e5
MLA:
Schwarze, B., et al. "Fermi surface of the chiral topological semimetal PtGa." Journal of Physics: Condensed Matter 34.42 (2022).
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