Direct observation of an incommensurate charge density wave in the superconductor Ta4Pd3Te16

ORAL

Abstract

The various electronic instabilities such as superconductivity (SC) and charge density wave (CDW) in low dimensions often conspire to determine some novel ground states in strongly correlated systems. In this talk we present our experimental and theoretical results. We report the observation of a highly unusual incommensurate charge density wave (CDW) in the superconductor Ta4Pd3Te16, using synchrotron X-ray diffraction. Additionally, our de Haas-van Alphen (dHvA) quantum oscillation measurements detect no evidence of Fermi surface reconstruction across the CDW transition. The temperature-pressure phase diagram was also determined, and the SC dome is found to be centered at the pressure where the CDW vanishes.

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Presenters

  • Zhenzhong Shi

    Department of Physics, Duke University, Department of Physics, Duke University, Durham, North Carolina, USA, Dept. of Phys. & Natl. High Magnetic Field Lab., Florida State Univ., Duke University

Authors

  • Zhenzhong Shi

    Department of Physics, Duke University, Department of Physics, Duke University, Durham, North Carolina, USA, Dept. of Phys. & Natl. High Magnetic Field Lab., Florida State Univ., Duke University

  • Stephen J Kuhn

    Department of Physics, Duke University, Indiana Univ - Bloomington

  • Felix Flicker

    Rudolph Peierls Centre for Theoretical Physics, Department of Physics, Clarendon Laboratory, University of Oxford

  • William Steinhardt

    Department of Physics, Duke University

  • Sachith Dissanayake

    Department of Physics, Duke University, Department of Physics, Duke University, Durham, North Carolina, USA, Physics, Duke University, Oak Ridge National Lab, Duke University, Oak Ridge National Laboratory

  • Toni Helm

    Max Planck Institute for Chemical Physics of Solids, Dresden High Magnetic Field Laboratory, Helmholtz Zentrum Dresden Rossendorf

  • Jooseop Lee

    Cornell High Energy Synchrotron Source, Cornell University

  • Jacob Ruff

    Cornell High Energy Synchrotron Source, Cornell University, CHESS synchrotron, Cornell University, Cornell University

  • Gilberto F L Fabbris

    Advanced Photon Source, Argonne National Laboratory, Brookhaven National Laboratory

  • David E Graf

    Florida State University, National High Magnetic Field Laboratory, Florida State University, Department of Physics, National High Magnetic Field Laboratory, Florida State University, Florida, USA, National High Magnetic Field Laboratory, National High Magnetic Field Lab, Florida State University, National High Magnetic Field Laboratory and Department of Physics, Florida State University, Florida State Univ, Natl High Magnetic Field Lab, National High Magnetic Field Lab, Tallahassee, FL 32310, USA, National High Magnetic Field Laboratory, 1800 E. Paul Dirac Drive, Tallahassee, FL 32310, USA, National High Magnetic Field Laboratory-Florida State University, National High Magnetic Field Laboratory, Tallahassee, FL, NHMFL, Florida State University, NHMFL

  • Joerg Strempfer

    Advanced Photon Source, Argonne National Laboratory

  • Daniel Haskel

    Advanced Photon Source, Argonne National Laboratory, Argonne National Laboratory, Argonne National Lab

  • Sara Haravifard

    Department of Physics and Department of Mechanical Engineering & Materials Science, Duke University, Department of Physics and Department of Mechanical Engineering & Materials Science, Duke University, North Carolina, USA, Department of Physics, Department of Mechanical Engineering & Materials Science, Duke University, Duke University