Momentum Dependent Charge Density Wave Gap in an Antiferromagnetic Metal

POSTER

Abstract

Charge density wave (CDW) ordering has been an important topic of study for a long time owing

to its connection with other exotic phases such as superconductivity and magnetism. The RTe3 (R = rare-earth elements) family of materials provides a fertile ground to study the dynamics of CDW in van der Waals layered materials, and the presence of magnetism in these materials allows to explore the interplay among CDW and long range magnetic ordering. Here, we have carried out a high-resolution angle-resolved photoemission spectroscopy (ARPES) study of a CDW material GdTe3, which is antiferromagnetic below ∼ 12 K, along with thermodynamic, electrical transport, magnetic, and Raman measurements. Our ARPES data show a two-fold symmetric Fermi surface with both gapped and ungapped regions indicative of the partial nesting. The gap is momentum dependent, maximum along Γ−Z and gradually decreases going towards Γ−X. Our study provides a platform to study the dynamics of CDW and its interaction with other physical orders in two- and three-dimensions.

*This work is supported by the National Science Foundation under CAREER award DMR-1847962, the NSF Partnerships for Research and Education in Materials Grant DMR-2121953, and the Air Force Office of Scientific Research MURI Grant No. FA9550-20-1-0322.

Publication: S. Regmi, I. B. Elius, A. P. Sakhya, D. Jeff, M. Sprague, M. I. Mondal, D. Jarrett, N. Valadez, A. Agosto, and T. Romanova, arXiv preprint arXiv:2306.04447 (2023)

Presenters

  • Nathan Valadez

    • University of Central Florida

Authors

  • Nathan Valadez

    • University of Central Florida

  • Sabin Regmi

    • Idaho National Laboratory
    • University of Central Florida
    • Department of Physics, University of Central Florida; Center for Quantum Actinide Science and Technology, Idaho National Laboratory
    • Department of Physics, University of Central Florida; Idaho National Laboratory

  • Iftakhar Bin Elius

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

  • Anup Pradhan Sakhya

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

  • Dylan A Jeff

    • University of Central Florida

  • Milo Sprague

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

  • Mazharul Islam Mondal

    • University of Central Florida

  • Damani Jarrett

    • University of Central Florida

  • Alexis J Agosto-Cuevas

    • University of Central Florida

  • Tetiana Romanova

    • Polish Academy of Sciences
    • Institute of Low Temperature and Structure Research, Polish Academy of Sciences

  • Jiun-Haw Chu

    • University of Washington
    • Department of Physics, University of Washington, Seattle, WA 98105

  • Saiful I Khondaker

    • University of Central Florida

  • Dariusz Kaczorowski

    • Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Ok´olna 2, 50-422 Wroc law, Poland
    • Polish Academy of Sciences
    • Institute of Low Temperature and Structure Research, Polish Academy of Sciences

  • Madhab Neupane

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