Two-channel conduction in YbPtBi

15 Mar 2017 Schilling M. B. Löhle A. Neubauer D. Shekhar C. Felser C. Dressel M. Pronin A. V.

We investigated transport, magnetotransport, and broadband optical properties of the half-Heusler compound YbPtBi. Hall measurements evidence two types of charge carriers: highly mobile electrons with a temperature-dependent concentration and low-mobile holes; their concentration stays almost constant within the investigated temperature range from 2.5 to 300 K. The optical spectra (10 meV - 2.7 eV) can be naturally decomposed into contributions from intra- and interband absorption processes, the former manifesting themselves as two Drude bands with very different scattering rates, corresponding to the charges with different mobilities... (read more)

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  • STRONGLY CORRELATED ELECTRONS
  • MESOSCALE AND NANOSCALE PHYSICS
  • MATERIALS SCIENCE