Electronic structure in a rare-earth based nodal-line semimetal candidate PrSbTe

ORAL

Abstract

Rare-earth (RE)-based RESbTe materials, isostructural to the nodal-line semimetal ZrSiS, have emerged as alternative avenue for nodal-line physics along with intriguing potentialities that the electronic correlation and magnetism may bring due to the presence of 4f electrons intrinsic to RE elements. Here, we have carried out an electronic structure study on PrSbTe by using angle-resolved photoemission spectroscopy (ARPES) supported by first-principles calculations and thermodynamic measurements. Thermodynamic characterizations indicate the absence of any discernible phase transitions down to 2 K. The results of ARPES measurements reveal the presence of gapless Dirac crossings that correspond to multiple nodal-lines in this system. This study contributes to the understanding of the pivotal role played by spin-orbit coupling in the context of RESbTe family of materials.

*This work is supported by National Science Foundation CAREER award DMR-1847962, Air Force Office of Scientific Research MURI Grant FA9550-20-1-0322, Idaho National Laboratory’s Laboratory Directed Research and Development program under Idaho Operations Office Contract DE-AC07-05ID14517, and Division of Materials Science and Engineering, Office of Basic Energy Sciences, Office of Science of the U.S. Department of Energy.

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Presenters

  • Sabin Regmi

    • Idaho National Laboratory
    • University of Central Florida
    • Department of Physics, University of Central Florida; Center for Quantum Actinide Science and Technology, Idaho National Laboratory
    • Department of Physics, University of Central Florida; Idaho National Laboratory

Authors

  • Sabin Regmi

    • Idaho National Laboratory
    • University of Central Florida
    • Department of Physics, University of Central Florida; Center for Quantum Actinide Science and Technology, Idaho National Laboratory
    • Department of Physics, University of Central Florida; Idaho National Laboratory

  • Iftakhar Bin Elius

    • University of central Florida
    • University of Central Florida
    • Department of Physics, University of Central Florida

  • Anup Pradhan Sakhya

    • University of Central Florida
    • Department of Physics, University of Central Florida

  • Milo Sprague

    • University of Central Florida
    • Department of Physics, University of Central Florida

  • Mazharul Islam Mondal

    • University of Central Florida
    • Department of Physics, University of Central Florida

  • Nathan A Valadez

    • University of Central Florida
    • Department of Physics, University of Central Florida

  • Volodymyr Buturlim

    • Center for Quantum Actinide Science and Technology, Idaho National Laboratory

  • Kali Booth

    • University of Central Florida
    • Department of Physics, University of Central Florida

  • Tetiana Romanova

    • Polish Academy of Sciences
    • Institute of Low Temperature and Structure Research, Polish Academy of Sciences

  • Krzysztof Gofryk

    • Idaho National Labs
    • Center for Quantum Actinide Science and Technology, Idaho National Laboratory

  • Andrzej Ptok

    • Institute of Nuclear Physics, Polish Academy of Sciences

  • Dariusz Kaczorowski

    • Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Ok´olna 2, 50-422 Wroc law, Poland
    • Polish Academy of Sciences
    • Institute of Low Temperature and Structure Research, Polish Academy of Sciences

  • Madhab Neupane

    • University of Central Florida
    • Department of Physics, University of Central Florida