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

doi:10.1143/JPSJ.80.033701

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

High Field Laboratory for Superconducting Materials

Research output: Contribution to journal › Article › peer-review

14 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 language	English
Article number	033701
Journal	journal of the physical society of japan
Volume	80
Issue number	3
DOIs	https://doi.org/10.1143/JPSJ.80.033701
Publication status	Published - 2011 Mar

Keywords

BaCoV O
Magnetostriction
Pulsed high magnetic field
Quantum spin chain
Ultrasound

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1143/JPSJ.80.033701

Cite this

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

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.",

keywords = "BaCoV O, Magnetostriction, Pulsed high magnetic field, Quantum spin chain, Ultrasound",

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

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T1 - Novel phase transition probed by sound velocity in quasi-one-dimensional ising-like antiferromagnet BaCo2V2O8

AU - Yamaguchi, Hironori

AU - Yasin, Shadi

AU - Zherlitsyn, Sergei

AU - Omura, Kumiko

AU - Kimura, Shojiro

AU - Yoshii, Shunsuke

AU - Okunishi, Kouichi

AU - He, Zhangzhen

AU - Taniyama, Tomoyasu

AU - Itoh, Mitsuru

AU - Hagiwara, Masayuki

PY - 2011/3

Y1 - 2011/3

N2 - 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.

AB - 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.

KW - BaCoV O

KW - Magnetostriction

KW - Pulsed high magnetic field

KW - Quantum spin chain

KW - Ultrasound

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