Current-controlled switching of diamagnetism in Ca3(Ru1-xTix)2O7

ORAL

Abstract

It was recently shown that a strong Landau diamagnetism may emerge in strongly correlated electron systems (SCES) under nonequilibrium steady state (NESS) conditions. However, due to high resistivity of the insulating state, in situ sign-switching of magnetism was not possible in the previous study. Here, we demonstrate that DC current can trigger in situ switching between the impurity-induced Mott insulating state and diamagnetic semimetallic state of the bilayered ruthenate Ca3Ru2O7. By performing simultaneous magnetic and resistive measurements, we map out the temperature vs current-density phase diagram in the NESS of this material. The present results open up the possibility of creating novel electronic states in a variety of SCES by NESS conditions under DC current.

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Presenters

  • Yoshiteru Maeno

    Department of Physics, Kyoto University, Dept. of Physics, Kyoto University, Department of Physics, Graduate School of Science, Kyoto University, Kyoto, Japan, Kyoto University, Department of Physics, Graduate School of Science, Kyoto University, Department of Physics, Kyoto University, Kyoto 606-8502, Japan, Department of Physics, Kyoto University, Japan

Authors

  • Yoshiteru Maeno

    Department of Physics, Kyoto University, Dept. of Physics, Kyoto University, Department of Physics, Graduate School of Science, Kyoto University, Kyoto, Japan, Kyoto University, Department of Physics, Graduate School of Science, Kyoto University, Department of Physics, Kyoto University, Kyoto 606-8502, Japan, Department of Physics, Kyoto University, Japan

  • Chanchal Sow

    Department of Physics, Graduate School of Science, Kyoto University, Department of Physics, Kyoto University, Kyoto 606-8502, Japan

  • Ryo Numasaki

    Department of Physics, Kyoto University, Kyoto 606-8502, Japan

  • Giordano Mattoni

    Department of Physics, Kyoto University, Kyoto 606-8502, Japan

  • Shingo Yonezawa

    Dept. of Physics, Kyoto University, Department of Physics, Kyoto University, Kyoto 606-8502, Japan, Department of Physics, Kyoto University, Japan

  • Naoki Kikugawa

    Max Planck Institute for Chemical Physics of Solids, 01187 Dresden, Germany, National Institute for Material Science, Tsukuba, Ibaraki, National Institute for Materials Science, Tsukuba, National Institute for Materials Science, Quantum Transport Properties Group, National Institute for Materials Science (NIMS), Tsukuba 305-0003, Japan, National Institute for Material Science

  • Shinya Uji

    National Institute for Materials Science, Quantum Transport Properties Group, National Institute for Materials Science (NIMS), Tsukuba 305-0003, Japan