Temperature dependent infrared spectroscopy of PrAlSi

ORAL

Abstract

PrAlSi has been shown recently to provide a new platform for studying Weyl fermions and related effects, such as the anomalous Hall effect. In order to better understand the electronic and magnetic properties of its ground state, we performed temperature dependent optical reflectance measurements of single crystals of PrAlSi. The reflectance was measured between 80 cm-1 to 50,000 cm-1, at temperatures between 300 K and 5 K. The Drude peak sharpens with decreasing temperature, consistent with metallic behavior and in good agreement with dc resistivity measurements. From Kramers-Kronig analysis, we obtained various optical functions and here we focus in particular on the evolution of the spectral weight with temperature and energy in PrAlSi.

*This work is supported by the National Science Foundation through grant No. 1625882.

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Presenters

  • Catalin Martin

    • Ramapo College of NJ, Mahwah NJ, 07430

Authors

  • Catalin Martin

    • Ramapo College of NJ, Mahwah NJ, 07430

  • Aashish Poudel

    • Ramapo College of NJ, Mahwah NJ, 07430

  • Ihor Sydoryk

    • Ramapo College of NJ, Mahwah NJ, 07430

  • Rodica M Martin

    • Montclair State University, Montclair NJ, 07043, USA
    • Montclair State University, Montclair NJ, 07043

  • Halyna Hodovanets

    • University of Maryland, College Park
    • Maryland Quantum Materials Center, Department of Physics, University of Maryland-College Park,College Park, Maryland 20742

  • Hyunsoo Kim

    • University of Maryland, College Park
    • Maryland Quantum Materials Center, Department of Physics, University of Maryland-College Park,College Park, Maryland 20742

  • Johnpierre Paglione

    • University of Maryland, College Park
    • Physics Department, University of Maryland
    • Maryland Quantum Materials Center, Department of Physics, University of Maryland College Park
    • Department of Physics, University of Maryland, College Park
    • University of Maryland, College Park & NIST
    • Univ of Maryland-Colege Park
    • Center for Quantum Materials, University of Maryland
    • Maryland Quantum Materials Center, Department of Physics, University of Maryland-College Park,College Park, Maryland 20742