Broadband optical conductivity of the chiral multifold semimetal PdGa

Maulana LZ, Li Z, Uykur E, Manna K, Polatkan S, Felser C, Dressel M, Pronin AV (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Physical Review B American Physical Society

Book Volume: 103

Article Number: 115206

Journal Issue: 11

DOI: 10.1103/PhysRevB.103.115206

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.

Involved external institutions

Universität Stuttgart DE Germany (DE) Nanjing University of Science and Technology CN China (CN) Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE)

How to cite

APA:

Maulana, L.Z., Li, Z., Uykur, E., Manna, K., Polatkan, S., Felser, C.,... Pronin, A.V. (2021). Broadband optical conductivity of the chiral multifold semimetal PdGa. Physical Review B, 103(11). https://doi.org/10.1103/PhysRevB.103.115206

MLA:

Maulana, L. Z., et al. "Broadband optical conductivity of the chiral multifold semimetal PdGa." Physical Review B 103.11 (2021).

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