Fermi surface of the chiral topological semimetal PtGa
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
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.
Details
Original language | English |
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Article number | 425502 |
Journal | Journal of Physics Condensed Matter |
Volume | 34 |
Issue number | 42 |
Publication status | Published - 19 Oct 2022 |
Peer-reviewed | Yes |
External IDs
PubMed | 35940168 |
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Keywords
ASJC Scopus subject areas
Keywords
- Fermi surface, quantum oscillation, topological semimetal