Investigation of superconducting properties of AuAgTe<sub>4</sub> under pressure

ORAL

Abstract

Materials containing gold have been seldom explored since gold is a very inert element forming relatively few compounds. In this work, we investigated the mineral sylvanite, AuAgTe4, under compression using first-principles calculations and found a structural phase transition from monoclinic P2/c to P2/m structure around 5 GPa (in agreement with X-ray diffraction and Raman results). We further examined the superconducting properties of the P2/m phase using the EPW package and identified that the main contribution to the electron-phonon coupling arises from the low-energy phonon modes.

*This work was supported by National Science Foundation Grant No. DMR-2132586. The computational resources were provided by XSEDE (TG-DMR180071), which is supported by National Science Foundation Grant No. ACI-1548562.

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Presenters

  • Gyanu P Kafle

    • Department of Physics, Applied Physics, and Astronomy, Binghamton University-SUNY, Binghamton, New York 13902, USA

Authors

  • Gyanu P Kafle

    • Department of Physics, Applied Physics, and Astronomy, Binghamton University-SUNY, Binghamton, New York 13902, USA

  • Evgenia Komleva

    • M.N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences, 620108 Ekaterinburg, Russia

  • Y. Amiel

    • School of Physics and Astronomy, Tel Aviv University, 69978 Tel Aviv, Israel

  • A. Palevski

    • School of Physics and Astronomy, Tel Aviv University, 69978 Tel Aviv, Israel

  • E. Greenberg

    • Center for Advanced Radiation Sources, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637, USA

  • Stella Chariton

    • Center for Advanced Radiation Sources, University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637, USA
    • Center for Advanced Radiation Sources, University of Chicago
    • University of Chicago
    • GSECARS, Advanced Photon Source, Argonne National Laboratory

  • Yurii Ponosov

    • M.N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences, 620108 Ekaterinburg, Russia

  • Daniel I Khomskii

    • II. Physikalisches Institut, Universitaet zu Koeln, Zuelpicher str. 77, 50937 Koeln, Germany
    • II. Physikalisches Institut

  • G. K Rozenberg

    • School of Physics and Astronomy, Tel Aviv University, 69978 Tel Aviv, Israel

  • Sergey V Streltsov

    • M.N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences, 620108 Ekaterinburg, Russia; Ural Federal University, Mira St. 19, 620002 Ekaterinburg, R
    • Institute of Metal Physics

  • Igor Mazin

    • George Mason University
    • Department of Physics and Astronomy and Quantum Science and Engineering Center, George Mason University, Fairfax, Virginia 22030, USA
    • Quantum Science and Engineering Center, Department of Physics and Astronomy - George Mason University

  • Elena R Margine

    • Department of Physics, Applied Physics, and Astronomy, Binghamton University-SUNY, Binghamton, New York 13902, USA
    • Binghamton University