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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.

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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