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Observation of flat bands in niobium halide semiconductor

POSTER

Abstract

Kagome materials are potential systems for Dirac fermions and flat bands, which make them suitable grounds for the study of topology and electronic correlations in geometrically frustrated quantum materials. This study investigates the electronic structure of one such material, a niobium halide semiconductor, with a breathing kagome lattice of niobium atoms. We reveal the presence of multiple flat and weak dispersing bands, that are well captured in theoretical band calculations as well. Being a layered van der Waals material with a magnetic monolayer, this system will open up avenues toward the study of electronic correlations, magnetic order, and their interplay in two dimensions as well as toward its potential applications.

Presenters

  • Alexis J Agosto-Cuevas

    University of Central Florida

Authors

  • Alexis J Agosto-Cuevas

    University of Central Florida

  • Sabin Regmi

    University of Central Florida, University of Central Florida; Idaho National Laboratory

  • Tharindu Warnakulasooriya Fernando

    University of Washington, tharindu@uw.edu

  • Yuzhou Zhao

    University of Washington

  • Anup Pradhan Sakhya

    University of Central Florida, Department of Physics, University of Central Florida, Orlando, Florida 32816, USA

  • Gyanendra Dhakal

    University of Central Florida

  • Iftakhar Bin Elius

    University of Central Florida, University of Central FLorida

  • Hector Vazquez

    University of Central Florida

  • Jonathan D Denlinger

    Lawrence Berkeley National Laboratory, Lawrence Berkeley National Laboratory, Berkeley, California

  • Jihui Yang

    University of Washington

  • Jiun-Haw Chu

    University of Washington, University of Washington, Seattle, Washington, USA

  • Xiaodong Xu

    University of Washington

  • Ting Cao

    University of Washington, Department of Materials Science & Engineering, University of Washington

  • Madhab Neupane

    University of Central Florida