Temperature dependent infrared spectroscopy of PrAlSi

ORAL

Abstract

PrAlSi represents a particular example of Weyl semimetal with ferromagnetic ground state, providing a platform for studying the effects of coupling between magnetism and Dirac fermions. Here, we present optical conductivity studies on single crystals of PrAlSi, determined from Kramers-Kronig transformation of reflectance measurements, in the range 80 cm-1 to 50,000 cm-1, at temperatures between 300 K and 5 K. We show detailed optical measurements at low temperature, from 5 K to 20 K, and focus our discussion on the evolution of spectral weight through the ferromagnetic transition, and on the potential effect of magnetic ordering on the linear (Dirac) electronic bands.

* CM acknowledges support for this project through the NSF Award ID 2323331.

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Presenters

  • Catalin Martin

    Ramapo College, Ramapo College of New Jersey

Authors

  • Catalin Martin

    Ramapo College, Ramapo College of New Jersey

  • Agrim Gupta

    Ramapo College of New Jersey

  • Suraj Neupane

    Ramapo College of New Jersey

  • Hyunsoo Kim

    Missouri University of Science & Technology, Maryland Quantum Materials Center, Department of Physics, University of Maryland, College Park, Maryland 20742, USA, Missouri S and T

  • Halyna Hodovanets

    Missouri University of Science and Technology, Maryland Quantum Materials Center, Department of Physics, University of Maryland, College Park, Maryland 20742, USA