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-N00052

Abstract:

ANPA2023-N00052: Observation of charge density wave induced gap openings in EuTe4

Authors:

• Iftakhar; Bin Elius

• Iftakhar Bin Elius; Department of Physics, University of Central Florida, Orlando, Florida 32816, USA

• Gyanendra Dhakal; Department of Physics, University of Central Florida, Orlando, Florida 32816, USA

• Sabin Regmi; Department of Physics, University of Central Florida, Orlando, Florida 32816, USA

• Anup Pradhan Sakhya; Department of Physics, University of Central Florida, Orlando, Florida 32816, USA

• Milo X Sprague; Department of Physics, University of Central Florida, Orlando, Florida 32816, USA

• Mazharul Islam Mondal; Department of Physics, University of Central Florida, Orlando, Florida 32816, USA

• Cheng-Yi Huang; Institute of Physics, Academia Sinica, Taipei 11529, Taiwan

• Bahadur Singh; Tata Institute of Fundamental Research, Mumbai, India

• Debarchan Das; Department of Physics and Astronomy, California State University, Northridge, California 91330, USA

• Dariusz Kaczorowski; Institute of Low Temperature and Structure Research, Polish Academy of Sciences, 50-950 Wroclaw, Poland

• Hsin Lin; Institute of Physics, Academia Sinica, Taipei 11529, Taiwan

• Arun Bansil; Department of Physics, Northeastern University, Boston, Massachusetts 02115, USA

• Madhab Neupane; Department of Physics, University of Central Florida, Orlando, Florida 32816, USA

• ;

Charge density wave (CDW) state in materials captivates tremendous research interests due to its interference and coexistence with superconductivity. RTen ( R= rare-earth) family is well known for hosting CDW, but unlike n= 2 or 3, EuTe4 has both Te bi- and monolayer nets, making this material an ideal platform to study the interplay between the band features of these two coexisting layers. Here, we present the electronic band structures of EuTe4 using angle-resolved photoemission spectroscopy (ARPES) and first-principles calculations. We have observed not only a CDW gap opening that spans all over the Fermi level, other modulation induced gap opening was observed at lower binding energies as well. Our detailed ARPES based studies discern the directional dependence of the anisotropic CDW gap all over the momentum space and the physics of band interactions at lower energies. Results in this paper provide a fundamental understanding of the band structure of RTe4 sub-family, which paves the way for further exploration of this system.

To cite this abstract, use the following reference: https://anpaglobal.org/conference/2023/ANPA2023-N00052