Dynamics in Multiferroic Skyrmion GaV<sub>4</sub>S<sub>8</sub>

ORAL

Abstract

GaV4S8 is a rare example of a material hosting a multiferroic Neel-type Skyrmion [1]. We have grown 91 mg single crystals of this material and explored the field/temperature phase diagram using Small Angle Neutron Scattering (SANS) as a probe. We have also investigated the dynamics of the skyrmion phase. In this study, we apply a static field along the [111] crystallographic direction. We also apply a modulated magnetic field along this direction and observe time tagged events on our detector to observe the time dependence. In this talk, we will discuss our results in the context of recent AC susceptibility measurements [2].

References: [1] I. Kézsmárki et al., Nature Materials 14, 1116 (2015)
[2] Ádám Butykai et al., Phys. Rev. B 96, 104430 (2017)

*The work at Rutgers University was supported by the NSF under Grant No. DMR-1629059.
The work at Postech was supported by the National Research Foundation of Korea(NRF) funded by the Ministry of Science and ICT(No. 016K1A4A4A01922028).
Access to NG7SANS was provided by the Center for High Resolution Neutron Scattering, a partnership between NIST and the National Science Foundation under Agreement No. DMR-1508249.

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Presenters

  • William Ratcliff

    • NIST Center for Neutron Research, National Institute of Standards and Technology
    • National Institute of Standards and Technology
    • NIST Center for neutron research, National Institute of Standard and Technology, Gaithersburg, MD
    • NIST

Authors

  • William Ratcliff

    • NIST Center for Neutron Research, National Institute of Standards and Technology
    • National Institute of Standards and Technology
    • NIST Center for neutron research, National Institute of Standard and Technology, Gaithersburg, MD
    • NIST

  • Jeffrey W Lynn

    • National Institute of Standards and Technology
    • NIST
    • NIST Center for Neutron Research, National Institute of Standards and Technology
    • NIST Center for neutron research, National Institute of Standard and Technology, Gaithersburg, MD

  • Markus Bleuel

    • National Institute of Standards and Technology
    • Center for Neutron Research, National Institute of Standards and Technology

  • Lunyong zhang

    • Laboratory for Pohang Emergent Materials and Max Plank POSTECH Center for Complex Phase Materials, Pohang University of Science and Technology

  • Sang-Wook Cheong

    • Rutgers University
    • Department of Physics and Astronomy, Rutgers University
    • Rutgers University, New Brunswick
    • Rutgers Center for Emergent Materials and Department of Physics & Astronomy, Rutgers University
    • Center for Quantum Materials Synthesis and Department of Physics and Astronomy, Rutgers, the State University of New Jersey
    • Department of Physics, Rutgers University
    • Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University, Piscataway, NJ
    • Department of Physics and Astronomy, Rutgers University, Piscataway, NJ 08854, USA
    • Physics, Rutgers University
    • Physics and Astronomy, Rutgers University, New Brunswick
    • Department of Physics and Astronomy, Rutgers University, New Jersey
    • Rutgers University, Physics and Astronomy, and Laboratory for Pohang Emergent Materials and Max Plank POSTECH Center for Complex Phase Materials, Pohang University of Science
    • RCEM, Department of Physics and Astronomy, Rutgers U.
    • Rutgers Center for Emergent Materials and Department of Physics and Astronomy, Rutgers University
    • Department of Physics and Astronomy, 136 Frelinghuysen Road, Piscataway, New Jersey 08854, USA, Rutgers Center for Emergent Materials