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  Fermi surface of the chiral topological semimetal PtGa

Schwarze V, B., Uhlarz, M., Hornung, J., Chattopadhyay, S., Manna, K., Shekhar, C., et al. (2022). Fermi surface of the chiral topological semimetal PtGa. Journal of Physics: Condensed Matter, 34(42): 425502, pp. 1-7. doi:10.1088/1361-648X/ac87e5.

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 Creators:
Schwarze V, B.1, Author
Uhlarz, M.1, Author
Hornung, J.1, Author
Chattopadhyay, S.1, Author
Manna, K.2, Author           
Shekhar, C3, Author           
Felser, C.4, Author           
Wosnitza, J.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
3Chandra Shekhar, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863428              
4Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 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.

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Language(s): eng - English
 Dates: 2022-08-222022-08-22
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: ISI: 000843576600001
DOI: 10.1088/1361-648X/ac87e5
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Title: Journal of Physics: Condensed Matter
  Abbreviation : J. Phys. Condens. Matter.
Source Genre: Journal
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Publ. Info: Bristol : IOP Publishing
Pages: - Volume / Issue: 34 (42) Sequence Number: 425502 Start / End Page: 1 - 7 Identifier: ISSN: 0953-8984
CoNE: https://pure.mpg.de/cone/journals/resource/954928562478