AIP Advances (May 2017)

Anomalous spin disordered properties of strongly correlated honeycomb compound In3Cu2VO9

  • Shi-Qing Jia,
  • Qing-Wei Wang,
  • Xiang-Long Yu,
  • Liang-Jian Zou

DOI
https://doi.org/10.1063/1.4977227
Journal volume & issue
Vol. 7, no. 5
pp. 055825 – 055825-6

Abstract

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We study the ground-state and finite-temperature magnetic properties of an interlayer frustrated J1 − J2 − Jc Heisenberg model on three-dimensional honeycomb lattice by employing the Schwinger boson mean-field theory, focusing on the low-energy physics in In3Cu2VO9. We find that with the increase of interlayer coupling Jc from 0 to 3.6 meV, the interlayer frustrated system transits from an antiferromagnetic (AFM) phase to a state with intralayer AFM order and interlayer disorder. This spin disordered phase explains not only the intralayer phase transition at TN = 38 K, but also the qualitative behaviors of the intermediate-temperature specific heat and magnetic susceptibility of In3Cu2VO9.