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  • Letter
  • Open Access

Nonequilibrium dynamical behavior in noncoplanar magnets with chiral spin texture

Takayuki Shiino1,*, Fernand Denoel1, Girma Hailu Gebresenbut2, Cesar Pay Gómez2, Per Nordblad1, and Roland Mathieu1,†

  • 1Department of Materials Science and Engineering, Uppsala University, Box 35, 751 03 Uppsala, Sweden
  • 2Department of Chemistry, Ångström Laboratory, Structural Chemistry, Uppsala University, 751 21 Uppsala, Sweden

  • *neomi.taka.shin@gmail.com
  • †roland.mathieu@angstrom.uu.se
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Phys. Rev. B 105, L180409 – Published 16 May, 2022

DOI: https://doi.org/10.1103/PhysRevB.105.L180409

Abstract

We observe nonequilibrium dynamical magnetic behavior in the magnetically ordered phase of a Tsai-type Tb-Au-Si quasicrystal approximant system. The magnetic texture in the ordered phase is found to exhibit scalar spin chirality (SSC) order, inferring that SSC is the order parameter of the present magnetic system. We further find that the introduction of “pseudo-Tsai” clusters, associated with additional Tb atoms in the structure, induces spin-glass dynamics. We discuss the observed dynamical magnetic behavior in the Tb-Au-Si systems, considering the effect of the pseudo-Tsai clusters on the magnetic configuration and local spin chirality.

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References (30)

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Phys. Rev. B 105, L180409– Published 16 May, 2022
  • Received 28 February 2022
  • Accepted 4 May 2022
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