Field-induced order-disorder transition in antiferromagnetic BaCo2V2O8 driven by a softening of spinon excitation

S. Kimura; H. Yashiro; K. Okunishi; M. Hagiwara; Z. He; K. Kindo; T. Taniyama; M. Itoh

doi:10.1103/PhysRevLett.99.087602

Field-induced order-disorder transition in antiferromagnetic BaCo2V2O8 driven by a softening of spinon excitation

S. Kimura, H. Yashiro, K. Okunishi, M. Hagiwara, Z. He, K. Kindo, T. Taniyama, M. Itoh

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

78 Citations (Scopus)

Abstract

High field magnetization and ESR measurements on the quasi-one-dimensional (1D) antiferromagnet BaCo2V2O8 have been performed in magnetic fields up to 50 T along the chain. The experimental results are explained well in terms of a 1D S=1/2 antiferromagnetic XXZ model in longitudinal fields. We show that the quantum phase transition from the Néel ordered phase to the spin liquid one in the model is responsible for a peculiar order to disorder transition in BaCo2V2O8.

Original language	English
Article number	087602
Journal	Physical review letters
Volume	99
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.99.087602
Publication status	Published - 2007 Aug 25
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.99.087602

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title = "Field-induced order-disorder transition in antiferromagnetic BaCo2V2O8 driven by a softening of spinon excitation",

abstract = "High field magnetization and ESR measurements on the quasi-one-dimensional (1D) antiferromagnet BaCo2V2O8 have been performed in magnetic fields up to 50 T along the chain. The experimental results are explained well in terms of a 1D S=1/2 antiferromagnetic XXZ model in longitudinal fields. We show that the quantum phase transition from the N{\'e}el ordered phase to the spin liquid one in the model is responsible for a peculiar order to disorder transition in BaCo2V2O8.",

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AU - Kimura, S.

AU - Yashiro, H.

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AU - Hagiwara, M.

AU - He, Z.

AU - Kindo, K.

AU - Taniyama, T.

AU - Itoh, M.

PY - 2007/8/25

Y1 - 2007/8/25

N2 - High field magnetization and ESR measurements on the quasi-one-dimensional (1D) antiferromagnet BaCo2V2O8 have been performed in magnetic fields up to 50 T along the chain. The experimental results are explained well in terms of a 1D S=1/2 antiferromagnetic XXZ model in longitudinal fields. We show that the quantum phase transition from the Néel ordered phase to the spin liquid one in the model is responsible for a peculiar order to disorder transition in BaCo2V2O8.

AB - High field magnetization and ESR measurements on the quasi-one-dimensional (1D) antiferromagnet BaCo2V2O8 have been performed in magnetic fields up to 50 T along the chain. The experimental results are explained well in terms of a 1D S=1/2 antiferromagnetic XXZ model in longitudinal fields. We show that the quantum phase transition from the Néel ordered phase to the spin liquid one in the model is responsible for a peculiar order to disorder transition in BaCo2V2O8.

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Field-induced order-disorder transition in antiferromagnetic BaCo2V2O8 driven by a softening of spinon excitation

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