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Pressure effects on superconductivity and anomalous transition in triangular lattice CuIr<sub>2</sub>Te<sub>4</sub>

POSTER

Abstract

Geometrical spin-frustrated systems play an important role in condensed matter physics. Recently, a proposed charge-density-wave (CDW) along with superconductivity (SC) in CuIr2Te4 was reported [1] through the resistivity and magnetization measurements. It motivated us to further study the competitions between CDW and SC under external hydrostatic pressure. The CuIr2Te4 was synthesized by the solid-state reaction method and characterized using X-ray diffraction (XRD) and magnetization measurements. XRD pattern confirmed the major phase of CuIr2Te4 and the anomalous transition (Ts ~ 200 K) along with SC transition below Tc ~ 3 K in zero-field-cooling cycle was observed. The preliminary results are in agreement with the previous report [1]. Under the external pressure, both transitions (Ts and Tc) exhibit a systematic change, suggesting that a significant competition between anomalous transition and SC occurs in CuIr2Te4. The nature of anomalous transition in CuIr2Te4 will be discussed.

Reference:
[1] Dong Yan et al., CuIr2Te4: A Quasi-Two-Dimensional Ternary Telluride Chalcogenide Superconductor, arXiv:1908.05438.

Presenters

  • Hung-Duen Yang

    Physics, National Sun Yat-sen University, Department of Physics, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan, Department of Physics, National Sun Yat-sen University, Department of Physics, National Sun Yat-sen University, Kaohsiung 804, Taiwan, Natl Sun Yat Sen Univ, Department of Physics, National Sun Yat-sen University, Taiwan

Authors

  • Hung-Duen Yang

    Physics, National Sun Yat-sen University, Department of Physics, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan, Department of Physics, National Sun Yat-sen University, Department of Physics, National Sun Yat-sen University, Kaohsiung 804, Taiwan, Natl Sun Yat Sen Univ, Department of Physics, National Sun Yat-sen University, Taiwan

  • Hung-Cheng Wu

    Physics, National Sun Yat-sen University, Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, TX 77204, USA, Texas Center for Superconductivity, University of Houston, Department of Physics, National Sun Yat-sen University, Department of Physics, National Sun Yat-sen University, Kaohsiung 804, Taiwan, Natl Sun Yat Sen Univ, Texas Center for Superconductivity and Physics Department at the Univ of Houston

  • Yi-Chieh Chung

    Natl Sun Yat Sen Univ

  • Ting-Wel Guo

    Natl Sun Yat Sen Univ

  • Zong-Heng Yang

    Natl Sun Yat Sen Univ

  • D. Chandrasekhar Kakarla

    Department of Physics, National Sun Yat-sen University, Department of Physics, National Sun Yat-sen University, Kaohsiung 804, Taiwan, Natl Sun Yat Sen Univ

  • Liangzi Deng

    Texas Center for Superconductivity, Univ of Houston, Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, TX 77204, USA, Texas Center for Superconductivity, University of Houston, Texas Center for Superconductivity and Department of Physics, University of Houston, Texas Center for Superconductivity, University of Houston, Texas, 77204, USA, Texas Center for Superconductivity and Physics Department at the Univ of Houston

  • Melissa Gooch

    Texas Center for Superconductivity, Univ of Houston, Texas Center for Superconductivity and Department of Physics, University of Houston, Houston, TX 77204, USA, Texas Center for Superconductivity, University of Houston, Texas Center for Superconductivity and Department of Physics, University of Houston, Texas Center for Superconductivity, University of Houston, Texas

  • Ching (Paul) W Chu

    Texas Center for Superconductivity and Department of Physics, University of Houston, Texas Center for Superconductivity, University of Houston, Texas, 77204, USA, Texas Center for Superconductivity, University of Houston, Texas, Texas Center for Superconductivity, University of Houston, Univ of Houston