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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.

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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