Novel phase transition probed by sound velocity in quasi-one-dimensional ising-like antiferromagnet BaCo2V2O8

Hironori Yamaguchi, Shadi Yasin, Sergei Zherlitsyn, Kumiko Omura, Shojiro Kimura, Shunsuke Yoshii, Kouichi Okunishi, Zhangzhen He, Tomoyasu Taniyama, Mitsuru Itoh, Masayuki Hagiwara

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13 Citations (Scopus)

Abstract

We have performed magnetostriction and ultrasound measurements on the quasi-one-dimensional S=1/2 Ising-like antiferromagnet BaCo2V 2O8 in high magnetic fields of up to 51 T. The magnetostriction shows lattice shrinking along the c-axis, and we interpret it as the lattice distortion caused by exchange striction and Van-Vleck paramagnetism. It is clarified that the field dependence of sound velocity is correlated to the magnetostriction. We observed a pronounced softening in the sound velocity of the longitudinal-acoustic c33 mode and found a novel phase transition.

Original languageEnglish
Article number033701
Journaljournal of the physical society of japan
Volume80
Issue number3
DOIs
Publication statusPublished - 2011 Mar 1

Keywords

  • BaCoV O
  • Magnetostriction
  • Pulsed high magnetic field
  • Quantum spin chain
  • Ultrasound

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Yamaguchi, H., Yasin, S., Zherlitsyn, S., Omura, K., Kimura, S., Yoshii, S., Okunishi, K., He, Z., Taniyama, T., Itoh, M., & Hagiwara, M. (2011). Novel phase transition probed by sound velocity in quasi-one-dimensional ising-like antiferromagnet BaCo2V2O8. journal of the physical society of japan, 80(3), [033701]. https://doi.org/10.1143/JPSJ.80.033701