Control of emergent inductance in the helimagnet YMn<sub>6</sub>Sn<sub>6</sub> by Tb substitution

ORAL

Abstract

Ac-current-driven motions of spiral spin textures can give rise to emergent electric fields and provide functionality as an inductor (emergent inductor) [1-2]. YMn6Sn6 is a helimagnet that shows the emergent inductance even above room temperature.[3] To identify the optimized material conditions for the phenomenon, we have investigated the effect of partial substitution of Tb for Y on the emergent inductance. Small-angle neutron scattering and inductance measurements have revealed that the pinning effect induced by Tb doping selectively and largely suppresses a negative component of the emergent inductance. We also find that in addition to the spin helix, the collinear antiferromagnetic structure can host positive emergent inductance due to spin fluctuations.



[1] N. Nagaosa, Jpn. J. Appl. Phys. 58, 12090 (2019).

[2] T. Yokouchi et al. Nature 586, 232 (2020).

[3] A. Kitaori et al. PNAS 118, e2105422118 (2021).

**This work was supported by JST (CREST: No. JPMJCR1874 and JPMJCR16F1, FOREST: No. JPMJFR2038), the JSPS KAKENHI (No. JP20H01859, JP20H05155, and JP21J11830), SNSF Sinergia network "NanoSkyrmionics" (No. CRSII5_171003), the SNSF Project No. 200021_188707 and an ETH Zürich Research Partnership Grant RPG_072021_07. This work is based partly on experiments performed at the SINQ, PSI.

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Presenters

  • Aki Kitaori

    • The University of Tokyo

Authors

  • Aki Kitaori

    • The University of Tokyo

  • Jonathan S White

    • Paul Scherrer Institute

  • Naoya Kanazawa

    • University of Tokyo
    • Department of Applied Physics, The Univ. of Tokyo
    • Department of Applied Physics, Universit
    • The University of Tokyo
    • Univ of Tokyo

  • Victor Ukleev

    • Helmholtz-Zentrum Berlin for Materials and Energy, Germany
    • Helmholtz-Zentrum Berlin

  • Deepak Singh

    • Paul Scherrer Institut

  • Yuki Furukawa

    • University of Tokyo

  • Taka-hisa Arima

    • Department of Advanced Materials Science, The University of Tokyo
    • Department of Advanced Materials Science, University of Tokyo
    • Univ of Tokyo
    • University of Tokyo
    • university of tokyo

  • Naoto Nagaosa

    • RIKEN, CEMS
    • RIKEN, Center for Emergent Matter Science
    • RIKEN Center for Emergent Matter Science (CEMS)

  • Yoshinori Tokura

    • Univ of Tokyo
    • University of Tokyo
    • RIKEN CEMS
    • RIKEN Center for Emergent Matter Science (CEMS)
    • RIKEN