Ferroelectricity in an ising chain magnet

Y. J. Choi; H. T. Yi; S. Lee; Q. Huang; V. Kiryukhin; S. W. Cheong

doi:10.1103/PhysRevLett.100.047601

Ferroelectricity in an ising chain magnet

Y. J. Choi, H. T. Yi, S. Lee, Q. Huang, V. Kiryukhin, S. W. Cheong

Department of Physics

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

406 Citations (Scopus)

Abstract

We report discovery of collinear-magnetism-driven ferroelectricity in the Ising chain magnet Ca3Co2-xMnxO6 (x 0.96). Neutron diffraction shows that Co2+ and Mn4+ ions alternating along the chains exhibit an up-up-down-down († †) magnetic order. The ferroelectricity results from the inversion symmetry breaking in the († †) spin chain with an alternating charge order. Unlike in spiral magnetoelectrics where antisymmetric exchange coupling is active, the symmetry breaking in Ca3(Co,Mn)2O6 occurs through exchange striction associated with symmetric superexchange.

Original language	English
Article number	047601
Journal	Physical review letters
Volume	100
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.100.047601
Publication status	Published - 2008 Jan 29

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1103/PhysRevLett.100.047601

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title = "Ferroelectricity in an ising chain magnet",

abstract = "We report discovery of collinear-magnetism-driven ferroelectricity in the Ising chain magnet Ca3Co2-xMnxO6 (x 0.96). Neutron diffraction shows that Co2+ and Mn4+ ions alternating along the chains exhibit an up-up-down-down († †) magnetic order. The ferroelectricity results from the inversion symmetry breaking in the († †) spin chain with an alternating charge order. Unlike in spiral magnetoelectrics where antisymmetric exchange coupling is active, the symmetry breaking in Ca3(Co,Mn)2O6 occurs through exchange striction associated with symmetric superexchange.",

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AU - Choi, Y. J.

AU - Yi, H. T.

AU - Lee, S.

AU - Huang, Q.

AU - Kiryukhin, V.

AU - Cheong, S. W.

PY - 2008/1/29

Y1 - 2008/1/29

N2 - We report discovery of collinear-magnetism-driven ferroelectricity in the Ising chain magnet Ca3Co2-xMnxO6 (x 0.96). Neutron diffraction shows that Co2+ and Mn4+ ions alternating along the chains exhibit an up-up-down-down († †) magnetic order. The ferroelectricity results from the inversion symmetry breaking in the († †) spin chain with an alternating charge order. Unlike in spiral magnetoelectrics where antisymmetric exchange coupling is active, the symmetry breaking in Ca3(Co,Mn)2O6 occurs through exchange striction associated with symmetric superexchange.

AB - We report discovery of collinear-magnetism-driven ferroelectricity in the Ising chain magnet Ca3Co2-xMnxO6 (x 0.96). Neutron diffraction shows that Co2+ and Mn4+ ions alternating along the chains exhibit an up-up-down-down († †) magnetic order. The ferroelectricity results from the inversion symmetry breaking in the († †) spin chain with an alternating charge order. Unlike in spiral magnetoelectrics where antisymmetric exchange coupling is active, the symmetry breaking in Ca3(Co,Mn)2O6 occurs through exchange striction associated with symmetric superexchange.

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Ferroelectricity in an ising chain magnet

Abstract

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