Critical property of spin-glass transition in a bond-disordered classical antiferromagnetic Heisenberg model with a biquadratic interaction

Hiroshi Shinaoka, Yusuke Tomita, Yukitoshi Motome

研究成果: Conference article査読

4 被引用数 (Scopus)

抄録

Motivated by puzzling spin-glass behaviors observed in many pyrochlore-based magnets, effects of magnetoelastic coupling to local lattice distortions were recently studied by the authors for a bond-disordered antiferromagnet on a pyrochlore lattice [arXiv:1010.5625v2]. Here, we extend the analyses with focusing on the critical property of the spin-glass transition which occurs concomitantly with a nematic transition. Finite-size scaling analyses are performed up to a larger system size with 8192 spins to estimate the transition temperature and critical exponents. The exponents are compared with those in the absence of the magnetoelastic coupling and with those for the canonical spin-glass systems. We also discuss the temperature dependence of the specific heat in comparison with that in canonical spin-glass systems as well as an experimental result.

本文言語English
論文番号032087
ジャーナルJournal of Physics: Conference Series
400
PART 3
DOI
出版ステータスPublished - 2012
外部発表はい
イベント26th International Conference on Low Temperature Physics, LT 2011 - Beijing, China
継続期間: 2011 8 102011 8 17

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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