Free-carrier dynamics in Au2Pb probed by optical conductivity measurements

R. Kemmler, R. Hübner, A. Löhle, D. Neubauer, I. Voloshenko, L. M. Schoop, M. Dressel, A. V. Pronin

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


We measured the optical reflectivity of the Dirac material Au2Pb in a broad frequency range (30-48 000 cm-1) for temperatures between 9 and 300 K. The optical conductivity, computed from the reflectivity, is dominated by free-carrier contributions from topologically trivial bulk bands at all temperatures. The temperature-independent total plasma frequency of these carriers is eV. Overall, optical response of Au2Pb is typically metallic with no signs of localization and bad-metal behavior.

Original languageAmerican English
Article number485403
JournalJournal of Physics Condensed Matter
Issue number48
StatePublished - Nov 12 2018

ASJC Scopus subject areas

  • Condensed Matter Physics
  • General Materials Science


  • Dirac materials
  • optical conductivity
  • topological semimetals


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