Bulletin of ANPA

Abstract submitted to ANPA Conference July 14–16, 2023

Volume 5, Number 1

Condensed Matter Physics and Material Science

Abstract ID: ANPA2023-N00067

Abstract:

ANPA2023-N00067: Observation of flat bands in niobium halide semiconductor

Authors:

• Alexis Jadiel Agosto; University of Central Florida

• Alexis J. Agosto-Cuevas ,1; 1, University of Central Florida

• Sabin Regmi,1; 2, University of Washington, Seattle,

• Tharindu Fernando,2; 3Lawrence Berkeley National Laboratory, Berkeley

• Yuzhou Zhao,2; 4 University of Washington

• Anup Pradhan Sakhya,1;

• Gyanendra Dhakal,1;

• Iftakhar Bin Elius,1;

• Hector Vazquez,1;

• Jonathan D Denlinger,3;

• Jihui Yang,4;

• Jiun-Haw Chu,2;

• Xiaodong Xu, 2;

• Ting Cao,4;

• Madhab Neupane 1 ;

Observation of flat bands in niobium halide semiconductor Alexis J. Agosto-Cuevas ,1 Sabin Regmi,1 Tharindu Fernando,2 Yuzhou Zhao,2 Anup Pradhan Sakhya,1 Gyanendra Dhakal,1 Iftakhar Bin Elius,1 Hector Vazquez,1 Jonathan D Denlinger,3 Jihui Yang,4 Jiun-Haw Chu,2 Xiaodong Xu,2 Ting Cao,4 and Madhab Neupane 1 ∗ 1Department of Physics, University of Central Florida, Orlando, Florida 32816, USA 2Department of Physics, University of Washington, Seattle, Washington 98195, USA 3Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA 4Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA Alexis.Agosto@ucf.edu 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, Nb3I8, 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.

To cite this abstract, use the following reference: https://anpaglobal.org/conference/2023/ANPA2023-N00067