E8 Spectra of Quasi-One-Dimensional Antiferromagnet BaCo2 V2 O8 under Transverse Field

Haiyuan Zou; Yi Cui; Xiao Wang; Z. Zhang; J. Yang; G. Xu; A. Okutani; M. Hagiwara; M. Matsuda; G. Wang; Giuseppe Mussardo; K. Hódsági; M. Kormos; Zhangzhen He; S. Kimura; Rong Yu; Weiqiang Yu; Jie Ma; Jianda Wu

doi:10.1103/PhysRevLett.127.077201

E8 Spectra of Quasi-One-Dimensional Antiferromagnet BaCo2 V2 O8 under Transverse Field

Haiyuan Zou
, Yi Cui
, Xiao Wang
, Z. Zhang
, J. Yang
, G. Xu
, A. Okutani
, M. Hagiwara
, M. Matsuda
, G. Wang
, Giuseppe Mussardo
, K. Hódsági
, M. Kormos
, Zhangzhen He
, S. Kimura
, Rong Yu
, Weiqiang Yu
, Jie Ma
, Jianda Wu

Shanghai Jiao Tong University
Renmin University of China
National Institute of Standards and Technology
The University of Osaka
A110 Life Science Building
CAS - Institute of Physics
National Institute for Nuclear Physics
Budapest University of Technology and Economics
CAS - Fujian Institute of Research on the Structure of Matter
Institute for Materials Research, Tohoku University

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

50 Scopus citations

Abstract

We report V51 NMR and inelastic neutron scattering (INS) measurements on a quasi-1D antiferromagnet BaCo2V2O8 under transverse field along the [010] direction. The scaling behavior of the spin-lattice relaxation rate above the Néel temperatures unveils a 1D quantum critical point (QCP) at Hc1D≈4.7 T, which is masked by the 3D magnetic order. With the aid of accurate analytical analysis and numerical calculations, we show that the zone center INS spectrum at Hc1D is precisely described by the pattern of the 1D quantum Ising model in a magnetic field, a class of universality described in terms of the exceptional E8 Lie algebra. These excitations are nondiffusive over a certain field range when the system is away from the 1D QCP. Our results provide an unambiguous experimental realization of the massive E8 phase in the compound, and open a new experimental route for exploring the dynamics of quantum integrable systems as well as physics beyond integrability.

Original language	English
Article number	077201
Journal	Physical Review Letters
Volume	127
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevLett.127.077201
State	Published - 13 Aug 2021
Externally published	Yes

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10.1103/PhysRevLett.127.077201

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Zou, H., Cui, Y., Wang, X., Zhang, Z., Yang, J., Xu, G., Okutani, A., Hagiwara, M., Matsuda, M., Wang, G., Mussardo, G., Hódsági, K., Kormos, M., He, Z., Kimura, S., Yu, R., Yu, W., Ma, J., & Wu, J. (2021). E8 Spectra of Quasi-One-Dimensional Antiferromagnet BaCo2 V2 O8 under Transverse Field. Physical Review Letters, 127(7), Article 077201. https://doi.org/10.1103/PhysRevLett.127.077201

@article{e67c09d36ed04b02a288faa8593216b3,

title = "E8 Spectra of Quasi-One-Dimensional Antiferromagnet BaCo2 V2 O8 under Transverse Field",

abstract = "We report V51 NMR and inelastic neutron scattering (INS) measurements on a quasi-1D antiferromagnet BaCo2V2O8 under transverse field along the [010] direction. The scaling behavior of the spin-lattice relaxation rate above the N{\'e}el temperatures unveils a 1D quantum critical point (QCP) at Hc1D≈4.7 T, which is masked by the 3D magnetic order. With the aid of accurate analytical analysis and numerical calculations, we show that the zone center INS spectrum at Hc1D is precisely described by the pattern of the 1D quantum Ising model in a magnetic field, a class of universality described in terms of the exceptional E8 Lie algebra. These excitations are nondiffusive over a certain field range when the system is away from the 1D QCP. Our results provide an unambiguous experimental realization of the massive E8 phase in the compound, and open a new experimental route for exploring the dynamics of quantum integrable systems as well as physics beyond integrability.",

author = "Haiyuan Zou and Yi Cui and Xiao Wang and Z. Zhang and J. Yang and G. Xu and A. Okutani and M. Hagiwara and M. Matsuda and G. Wang and Giuseppe Mussardo and K. H{\'o}ds{\'a}gi and M. Kormos and Zhangzhen He and S. Kimura and Rong Yu and Weiqiang Yu and Jie Ma and Jianda Wu",

note = "Publisher Copyright: {\textcopyright} 2021 American Physical Society.",

year = "2021",

month = aug,

day = "13",

doi = "10.1103/PhysRevLett.127.077201",

language = "英语",

volume = "127",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "7",

}

Zou, H, Cui, Y, Wang, X, Zhang, Z, Yang, J, Xu, G, Okutani, A, Hagiwara, M, Matsuda, M, Wang, G, Mussardo, G, Hódsági, K, Kormos, M, He, Z, Kimura, S, Yu, R, Yu, W, Ma, J & Wu, J 2021, 'E8 Spectra of Quasi-One-Dimensional Antiferromagnet BaCo2 V2 O8 under Transverse Field', Physical Review Letters, vol. 127, no. 7, 077201. https://doi.org/10.1103/PhysRevLett.127.077201

TY - JOUR

T1 - E8 Spectra of Quasi-One-Dimensional Antiferromagnet BaCo2 V2 O8 under Transverse Field

AU - Zou, Haiyuan

AU - Cui, Yi

AU - Wang, Xiao

AU - Zhang, Z.

AU - Yang, J.

AU - Xu, G.

AU - Okutani, A.

AU - Hagiwara, M.

AU - Matsuda, M.

AU - Wang, G.

AU - Mussardo, Giuseppe

AU - Hódsági, K.

AU - Kormos, M.

AU - He, Zhangzhen

AU - Kimura, S.

AU - Yu, Rong

AU - Yu, Weiqiang

AU - Ma, Jie

AU - Wu, Jianda

PY - 2021/8/13

Y1 - 2021/8/13

N2 - We report V51 NMR and inelastic neutron scattering (INS) measurements on a quasi-1D antiferromagnet BaCo2V2O8 under transverse field along the [010] direction. The scaling behavior of the spin-lattice relaxation rate above the Néel temperatures unveils a 1D quantum critical point (QCP) at Hc1D≈4.7 T, which is masked by the 3D magnetic order. With the aid of accurate analytical analysis and numerical calculations, we show that the zone center INS spectrum at Hc1D is precisely described by the pattern of the 1D quantum Ising model in a magnetic field, a class of universality described in terms of the exceptional E8 Lie algebra. These excitations are nondiffusive over a certain field range when the system is away from the 1D QCP. Our results provide an unambiguous experimental realization of the massive E8 phase in the compound, and open a new experimental route for exploring the dynamics of quantum integrable systems as well as physics beyond integrability.

AB - We report V51 NMR and inelastic neutron scattering (INS) measurements on a quasi-1D antiferromagnet BaCo2V2O8 under transverse field along the [010] direction. The scaling behavior of the spin-lattice relaxation rate above the Néel temperatures unveils a 1D quantum critical point (QCP) at Hc1D≈4.7 T, which is masked by the 3D magnetic order. With the aid of accurate analytical analysis and numerical calculations, we show that the zone center INS spectrum at Hc1D is precisely described by the pattern of the 1D quantum Ising model in a magnetic field, a class of universality described in terms of the exceptional E8 Lie algebra. These excitations are nondiffusive over a certain field range when the system is away from the 1D QCP. Our results provide an unambiguous experimental realization of the massive E8 phase in the compound, and open a new experimental route for exploring the dynamics of quantum integrable systems as well as physics beyond integrability.

UR - https://www.scopus.com/pages/publications/85113161294

U2 - 10.1103/PhysRevLett.127.077201

DO - 10.1103/PhysRevLett.127.077201

M3 - 文章

C2 - 34459637

AN - SCOPUS:85113161294

SN - 0031-9007

VL - 127

JO - Physical Review Letters

JF - Physical Review Letters

IS - 7

M1 - 077201

ER -

E8 Spectra of Quasi-One-Dimensional Antiferromagnet BaCo2 V2 O8 under Transverse Field

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