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Non-trivial topology and Fermi surface of the kagome superconductor CsV<sub>3</sub>Sb<sub>5</sub> probed by de Haas-van Alphen oscillation

ORAL

Abstract

The Fermi surface of the kagome superconductor CsV3Sb5 was studied using torque magnetometry. Based on electrical resistance and magnetization measurements, this compound displays a charge density wave order at T* = 95 K and superconductivity at Tc = 3.25 K. The torque signal shows clear de Haas-van Alphen (dHvA) oscillation above 20 T with multiple frequencies up to 10 kT. Angular dependence of dHvA oscillation was carried out to investigate the dimensionality of the Fermi surface. Lifshitz-Kosevich analyses for determining the effective mass of charge carriers, as well as Berry phase calculations, will also be discussed.

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Presenters

  • Keshav Shrestha

    West Texas A&M University

Authors

  • Keshav Shrestha

    West Texas A&M University

  • M. Shi

    Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China

  • Thinh Nguyen

    Department of Chemistry and Physics, West Texas A&M University, Canyon, Texas 79016, USA

  • Duncan Miertschin

    Department of Chemistry and Physics, West Texas A&M University, Canyon, Texas 79016, USA

  • K. Fan

    Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China

  • Liangzi Deng

    University of Houston, Department of Physics and Texas Center for Superconductivity, University of Houston

  • David E Graf

    Florida State University, National High Magnetic Field Laboratory, National High Magnetic Field Laboratory and Department of Physics, Florida State University

  • Xianhui Chen

    Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China, University of Science and Technology of China

  • Ching-Wu W Chu

    University of Houston, Department of Physics and Texas Center for Superconductivity, University of Houston