Nature Communications (Sep 2021)

Decay and renormalization of a longitudinal mode in a quasi-two-dimensional antiferromagnet

  • Seung-Hwan Do,
  • Hao Zhang,
  • Travis J. Williams,
  • Tao Hong,
  • V. Ovidiu Garlea,
  • J. A. Rodriguez-Rivera,
  • Tae-Hwan Jang,
  • Sang-Wook Cheong,
  • Jae-Hoon Park,
  • Cristian D. Batista,
  • Andrew D. Christianson

DOI
https://doi.org/10.1038/s41467-021-25591-7
Journal volume & issue
Vol. 12, no. 1
pp. 1 – 12

Abstract

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Anisotropic spin S >1/2 quantum magnets can have multiple low energy modes. In this manuscript, the authors study the interaction of such low energy modes in the S = 1 antiferromagnet Ba2FeSi2O7 by combining neutron scattering measurements with an SU(3) generalization of the 1/S expansion.