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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.

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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