High pressure and magnetic field induced new phase in skyrmion Cu<sub>2</sub>OSeO<sub>3</sub>

Bulletin of the American Physical Society

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APS March Meeting 2019

Volume 64, Number 2

Monday–Friday, March 4–8, 2019; Boston, Massachusetts

Session X41: Chiral Magnetism and Structures II

8:00 AM–10:48 AM, Friday, March 8, 2019
BCEC Room: 209

Sponsoring Units: GMAG DMP
Chair: Sergio Montoya, Space and Naval Warfare Systems Center Pacific

Abstract: X41.00012 : High pressure and magnetic field induced new phase in skyrmion Cu₂OSeO₃

10:36 AM–10:48 AM

Abstract

Presenter:

Liangzi Deng
(Texas Center for Superconductivity and Department of Physics, University of Houston, Houston TX 77204)

Authors:

Liangzi Deng
(Texas Center for Superconductivity and Department of Physics, University of Houston, Houston TX 77204)

Hung-Cheng Wu
(Texas Center for Superconductivity and Department of Physics, University of Houston, Houston TX 77204)

Rabin Dahal
(Texas Center for Superconductivity and Department of Physics, University of Houston, Houston TX 77204)

Melissa Gooch
(Texas Center for Superconductivity and Department of Physics, University of Houston, Houston TX 77204)

Zheng Wu
(Texas Center for Superconductivity and Department of Physics, University of Houston, Houston TX 77204)

Hung-Duen Yang
(Department of Physics, National Sun Yat-sen University, Kaohsiung, 804 Taiwan)

Ching-Wu Chu
(Texas Center for Superconductivity and Department of Physics, University of Houston, Houston TX 77204)

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 Cu₂OSeO₃reveal 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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Bulletin of the American Physical Society

APS March Meeting 2019

Volume 64, Number 2

Monday–Friday, March 4–8, 2019; Boston, Massachusetts

Session X41: Chiral Magnetism and Structures II

Abstract: X41.00012 : High pressure and magnetic field induced new phase in skyrmion Cu2OSeO3

Presenter:

Authors:

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Abstract: X41.00012 : High pressure and magnetic field induced new phase in skyrmion Cu₂OSeO₃