Electronic structure study of rare-earth monopnictide DySb

ORAL

Abstract

Extreme magnetoresistance (XMR), magnetic and structural phase transition, and possible non-trivial topological phases in the rare-earth monopnictide family have recently invigorated intense research interest. Recent publications have experimentally revealed the presence of a Dirac-like semimetallic phases in some of the lighter rare earth monopnictide materials. This study investigates the electronic structure of other members with higher f-electrons in this family. In particular, here we present a combined study using angle-resolved photoemission spectroscopy (ARPES) and first-principles calculations on DySb. A bulk band gap that lacks band inversion is observed at the (X) point of the BZ, which is further supported by our first-principles calculations. Our study establishes DySb as a trivial semimetal and provides a direction to develop a deeper understanding of XMR through rare-earth correlated materials.

*This work is supported by the National Science Foundation (NSF) CAREER Award No. DMR-1847962.

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Presenters

  • Klauss Dimitri

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

Authors

  • Klauss Dimitri

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

  • Md Mofazzel Hosen

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

  • Gyanendra Dhakal

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

  • Baokai Wang

    • Department of Physics, Northeastern University
    • Northeastern University
    • Department of Physics, Northeastern University, USA

  • Firoza Kabir

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

  • Christopher Sims

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

  • Sabin Regmi

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

  • Bahadur Singh

    • DCMPMS, Tata Institute of Fundamental Research
    • Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research
    • Northeastern University
    • TIFR

  • Anan Sarkar

    • Indian Institute of Technology

  • Amit Agarwal

    • Department of Physics, Indian Institute Of Technology Kanpur
    • Indian Institute of Technology
    • Department of Physics, Indian Institute of Technology Kanpur, India
    • Department of Physics, Indian Institute of Technology Kanpur

  • Eric D Bauer

    • Los Alamos National Laboratory
    • Los Alamos National Lab
    • Los Alamos National laboratory
    • Los Alamos Natl Lab
    • Condensed Matter and Magnet Science Group, Los Alamos National Laboratory
    • Los Alamos National LAborator

  • Filip Ronning

    • Los Alamos National Lab
    • Los Alamos National Laboratory
    • Los Alamos National laboratory
    • Condensed Matter and Magnet Science Group, Los Alamos National Laboratory

  • Arun Kumar Bansil

    • Department of Physics, Northeastern University
    • Northeastern University
    • Northeastern U

  • Madhab Neupane

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