Unusual change in the electronic structure of a semimetal NdSb across the magnetic transition*

ORAL

Abstract

The rare-earth monopnictide (REM) materials host complex magnetic ground states and have recently attracted considerable research interest as it serves as a promising platform to investigate the interplay between strong electron correlation and topological phases. Here, we have reported a systematic investigation of the Fermi surface and the band dispersion of a correlated semimetal NdSb in the paramagnetic (PM) phase as well as the antiferromagnetic (AFM) phase (TN ~ 15 K) using angle-resolved photoemission spectroscopy (ARPES). Our data reveals a clear distinct band evolution phenomenon due to the antiferromagnetic phase transition. Most importantly, a complex band structure is observed at the zone center which is potentially due to the strong hybridization induced by the magnetic phase transition. Our experimental study opens up a new path to understand the intricate interplay between magnetism, and electron correlation in this REM family.

** This work is supported by U.S. AFOSR Grant No. FA9550-17-1-0415 and NSF CAREER Grant No. DMR-1847962.

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Presenters

  • Anup Pradhan Sakhya

    • University of Central Florida

Authors

  • Anup Pradhan Sakhya

    • University of Central Florida

  • M. Mofazzel Hosen

    • University of Central Florida

  • Sabin Regmi

    • 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

  • Gyanendra Dhakal

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

  • Klauss Dimitri

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

  • 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

  • Luis Persaud

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

  • 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 Bansil

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

  • Madhab Neupane

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