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  Broadband optical conductivity of the chiral multifold semimetal PdGa

Maulana, L. Z., Li, Z., Uykur, E., Manna, K., Polatkan, S., Felser, C., et al. (2021). Broadband optical conductivity of the chiral multifold semimetal PdGa. Physical Review B, 103(11): 115206, pp. 1-6. doi:10.1103/PhysRevB.103.115206.

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 Creators:
Maulana, L. Z.1, Author
Li, Z.1, Author
Uykur, E.1, Author
Manna, K.2, Author              
Polatkan, S.1, Author
Felser, C.3, Author              
Dressel, M.1, Author
Pronin, A. V.1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
3Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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Free keywords: Binary alloys, Optical conductivity, Palladium alloys, Broad spectral, Free carriers, Frequency behavior, Higher frequencies, Inter-band transition, Plasma frequencies, Structure-based, Temperature evolution, Gallium alloys
 Abstract: We present an optical conductivity study of the multifold semimetal PdGa, performed in a broad spectral range (100-20 000 cm-1; 12 meV-2.5 eV) down to T=10 K. The conductivity at frequencies below 4000 cm-1 is dominated by free carriers while at higher frequencies interband transitions provide the major contribution. The spectra do not demonstrate a significant temperature evolution: Only the intraband part changes as a function of temperature with the plasma frequency remaining constant. The interband contribution to the conductivity exhibits a broad peak at around 5500 cm-1 and increases basically monotonously at frequencies above 9000 cm-1. The band-structure-based computations reproduce these features of the interband conductivity and predict its linear-in-frequency behavior as frequency diminishes. © 2021 American Physical Society.

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Language(s): eng - English
 Dates: 2021-03-232021-03-23
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1103/PhysRevB.103.115206
 Degree: -

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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 103 (11) Sequence Number: 115206 Start / End Page: 1 - 6 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008