High pressure and magnetic field induced new phase in skyrmion Cu2OSeO3

ORAL

Abstract

In recent years, there has been an enormous experimental research effort on skyrmion materials because of their peculiar topological properties. From a technological perspective, the magnetic skyrmions offer great potentials as information carriers in future robust, high-density, and energy-efficient spintronic devices. Ever since the discovery of skyrmion states in Cu2OSeO3 by Y. Tokura’s group in 2012, Cu2OSeO3 has attracted considerable interest due to its complex magnetism, which is very sensitive to external perturbations, such as temperature, magnetic field, and pressure. Earlier high pressure studies on Cu2OSeO3 reveal that the ferrimagnetic transition temperature increases and the skyrmion state in magnetic H-T phase diagram could be enlarged under pressure up to 1.38 GPa. Recently, our group was able to establish the magnetic phase diagram in Cu2OSeO3 under pressure up to 45 GPa. Signatures of high pressure and magnetic field induced new phase in Cu2OSeO3 were detected. Structural analysis under high pressure in Cu2OSeO3 is ongoing to gain greater insight into the complex magnetism. Details of the experimental results will be shared and discussed in the presentation.

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Presenters

  • Liangzi Deng

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

Authors

  • Liangzi Deng

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

  • Hung-Cheng Wu

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

  • Rabin Dahal

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

  • Melissa Gooch

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

  • Zheng Wu

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

  • Hung-Duen Yang

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

  • Ching-Wu Chu

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