Electronic structure of a nodal line semimetal candidate

ORAL

Abstract

LnSbTe (Ln = lanthanides) compounds - isostructural to well-known ZrSiS family of nodal line semimetals - offer a rich platform for studying topological features as well as interaction of topology, magnetism, and electronic correlation. We performed systematic magnetic field induced thermal transport, temperature dependent magnetic susceptibility and field dependent magnetization studies of a rare-earth based ternary semimetal at low temperature. All these studies consistently establish the antiferromagnetic transition at 5.8 K. To investigate the electronic structure of the material, angle resolved photoemission spectroscopy (ARPES) and first principles-based calculations were performed. Multiple nodal lines along Γ−X and Γ−M high symmetry directions were observed in photon energy dependent ARPES measurements. Dirac point at X point is located well below the Fermi level. Our investigation indicates that this system can provide a rich platform to study the interplay of magnetism, topology and correlation.

* M.N. is supported by the National Science Foundation under the CAREER award DMR-1847962 and the Air Force Office of Scientific Research for MURI Grant No. FA9550-20-1-0322.

–

Presenters

  • Iftakhar Bin Elius

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

Authors

  • Iftakhar Bin Elius

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

  • Jacob F Casey

    SUNY Buffalo State University, Department of Physics, SUNY Buffalo State

  • 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

  • Volodymyr Buturlim

    Glenn T. Seaborg Institute, Idaho National Laboratory, Idaho National Laboratory

  • Anup Pradhan Sakhya

    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

  • Nathan A Valadez

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

  • Andrzej Ptok

    Institute of Nuclear Physics, Polish Academy of Sciences

  • Arjun K Pathak

    SUNY Buffalo State College

  • Krzysztof Gofryk

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

  • 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