Successive phase transitions and extended spin-excitation continuum in the S=12 triangular-lattice antiferromagnet Ba3CoSb2O 9

H. D. Zhou; Cenke Xu; A. M. Hallas; H. J. Silverstein; C. R. Wiebe; I. Umegaki; J. Q. Yan; T. P. Murphy; J. H. Park; Y. Qiu; J. R.D. Copley; J. S. Gardner; Y. Takano

doi:10.1103/PhysRevLett.109.267206

Successive phase transitions and extended spin-excitation continuum in the S=12 triangular-lattice antiferromagnet Ba₃CoSb₂O ₉

H. D. Zhou
, Cenke Xu
, A. M. Hallas
, H. J. Silverstein
, C. R. Wiebe
, I. Umegaki
, J. Q. Yan
, T. P. Murphy
, J. H. Park
, Y. Qiu
, J. R.D. Copley
, J. S. Gardner
, Y. Takano

Correlated Electron Materials

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

149 Scopus citations

Abstract

Using magnetic, thermal, and neutron measurements on single-crystal samples, we show that Ba₃CoSb₂O₉ is a spin-1/2 triangular-lattice antiferromagnet with the c axis as the magnetic easy axis and two magnetic phase transitions bracketing an intermediate up-up-down phase in magnetic field applied along the c axis. A pronounced extensive neutron-scattering continuum above spin-wave excitations, observed below T _N, implies that the system is in close proximity to one of two spin-liquid states that have been predicted for a 2D triangular lattice.

Original language	English
Article number	267206
Journal	Physical Review Letters
Volume	109
Issue number	26
DOIs	https://doi.org/10.1103/PhysRevLett.109.267206
State	Published - Dec 26 2012

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Zhou, H. D., Xu, C., Hallas, A. M., Silverstein, H. J., Wiebe, C. R., Umegaki, I., Yan, J. Q., Murphy, T. P., Park, J. H., Qiu, Y., Copley, J. R. D., Gardner, J. S., & Takano, Y. (2012). Successive phase transitions and extended spin-excitation continuum in the S=12 triangular-lattice antiferromagnet Ba₃CoSb₂O ₉. Physical Review Letters, 109(26), Article 267206. https://doi.org/10.1103/PhysRevLett.109.267206

@article{677afdacd4294ee693ebc73074babd7d,

title = "Successive phase transitions and extended spin-excitation continuum in the S=12 triangular-lattice antiferromagnet Ba3CoSb2O 9",

abstract = "Using magnetic, thermal, and neutron measurements on single-crystal samples, we show that Ba3CoSb2O9 is a spin-1/2 triangular-lattice antiferromagnet with the c axis as the magnetic easy axis and two magnetic phase transitions bracketing an intermediate up-up-down phase in magnetic field applied along the c axis. A pronounced extensive neutron-scattering continuum above spin-wave excitations, observed below T N, implies that the system is in close proximity to one of two spin-liquid states that have been predicted for a 2D triangular lattice.",

author = "Zhou, \{H. D.\} and Cenke Xu and Hallas, \{A. M.\} and Silverstein, \{H. J.\} and Wiebe, \{C. R.\} and I. Umegaki and Yan, \{J. Q.\} and Murphy, \{T. P.\} and Park, \{J. H.\} and Y. Qiu and Copley, \{J. R.D.\} and Gardner, \{J. S.\} and Y. Takano",

year = "2012",

month = dec,

day = "26",

doi = "10.1103/PhysRevLett.109.267206",

language = "English",

volume = "109",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

number = "26",

}

Zhou, HD, Xu, C, Hallas, AM, Silverstein, HJ, Wiebe, CR, Umegaki, I, Yan, JQ, Murphy, TP, Park, JH, Qiu, Y, Copley, JRD, Gardner, JS & Takano, Y 2012, 'Successive phase transitions and extended spin-excitation continuum in the S=12 triangular-lattice antiferromagnet Ba₃CoSb₂O ₉', Physical Review Letters, vol. 109, no. 26, 267206. https://doi.org/10.1103/PhysRevLett.109.267206

TY - JOUR

T1 - Successive phase transitions and extended spin-excitation continuum in the S=12 triangular-lattice antiferromagnet Ba3CoSb2O 9

AU - Zhou, H. D.

AU - Xu, Cenke

AU - Hallas, A. M.

AU - Silverstein, H. J.

AU - Wiebe, C. R.

AU - Umegaki, I.

AU - Yan, J. Q.

AU - Murphy, T. P.

AU - Park, J. H.

AU - Qiu, Y.

AU - Copley, J. R.D.

AU - Gardner, J. S.

AU - Takano, Y.

PY - 2012/12/26

Y1 - 2012/12/26

N2 - Using magnetic, thermal, and neutron measurements on single-crystal samples, we show that Ba3CoSb2O9 is a spin-1/2 triangular-lattice antiferromagnet with the c axis as the magnetic easy axis and two magnetic phase transitions bracketing an intermediate up-up-down phase in magnetic field applied along the c axis. A pronounced extensive neutron-scattering continuum above spin-wave excitations, observed below T N, implies that the system is in close proximity to one of two spin-liquid states that have been predicted for a 2D triangular lattice.

AB - Using magnetic, thermal, and neutron measurements on single-crystal samples, we show that Ba3CoSb2O9 is a spin-1/2 triangular-lattice antiferromagnet with the c axis as the magnetic easy axis and two magnetic phase transitions bracketing an intermediate up-up-down phase in magnetic field applied along the c axis. A pronounced extensive neutron-scattering continuum above spin-wave excitations, observed below T N, implies that the system is in close proximity to one of two spin-liquid states that have been predicted for a 2D triangular lattice.

UR - https://www.scopus.com/pages/publications/84871813916

U2 - 10.1103/PhysRevLett.109.267206

DO - 10.1103/PhysRevLett.109.267206

M3 - Article

AN - SCOPUS:84871813916

SN - 0031-9007

VL - 109

JO - Physical Review Letters

JF - Physical Review Letters

IS - 26

M1 - 267206

ER -

Successive phase transitions and extended spin-excitation continuum in the S=12 triangular-lattice antiferromagnet Ba₃CoSb₂O ₉

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