Spiral spin structures and origin of the magnetoelectric coupling in YMn2O5

J. H. Kim; S. H. Lee; S. I. Park; M. Kenzelmann; A. B. Harris; J. Schefer; J. H. Chung; C. F. Majkrzak; M. Takeda; S. Wakimoto; S. Y. Park; S. W. Cheong; M. Matsuda; H. Kimura; Y. Noda; K. Kakurai

doi:10.1103/PhysRevB.78.245115

Spiral spin structures and origin of the magnetoelectric coupling in YMn₂O₅

J. H. Kim, S. H. Lee, S. I. Park, M. Kenzelmann, A. B. Harris, J. Schefer, J. H. Chung, C. F. Majkrzak, M. Takeda, S. Wakimoto, S. Y. Park, S. W. Cheong, M. Matsuda, H. Kimura, Y. Noda, K. Kakurai

Department of Physics

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

40 Citations (Scopus)

Abstract

By combining neutron four-circle diffraction and polarized neutron-diffraction techniques we have determined the complex spin structures of a multiferroic YMn₂O₅ that exhibits two ferroelectric phases at low temperatures. The obtained magnetic structure has spiral components in both the low-temperature ferroelectric phases that are magnetically commensurate and incommensurate, respectively. Among proposed microscopic theories for the magnetoelectric coupling, our results are consistent with both the spin-current mechanism and the magnetostriction mechanism. Our results also explain why the electric polarization changes at the low-temperature commensurate-to-incommensurate phase transition.

Original language	English
Article number	245115
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	78
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevB.78.245115
Publication status	Published - 2008 Dec 1

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Kim, J. H., Lee, S. H., Park, S. I., Kenzelmann, M., Harris, A. B., Schefer, J., Chung, J. H., Majkrzak, C. F., Takeda, M., Wakimoto, S., Park, S. Y., Cheong, S. W., Matsuda, M., Kimura, H., Noda, Y., & Kakurai, K. (2008). Spiral spin structures and origin of the magnetoelectric coupling in YMn₂O₅. Physical Review B - Condensed Matter and Materials Physics, 78(24), [245115]. https://doi.org/10.1103/PhysRevB.78.245115

Kim, JH, Lee, SH, Park, SI, Kenzelmann, M, Harris, AB, Schefer, J, Chung, JH, Majkrzak, CF, Takeda, M, Wakimoto, S, Park, SY, Cheong, SW, Matsuda, M, Kimura, H, Noda, Y & Kakurai, K 2008, 'Spiral spin structures and origin of the magnetoelectric coupling in YMn₂O₅', Physical Review B - Condensed Matter and Materials Physics, vol. 78, no. 24, 245115. https://doi.org/10.1103/PhysRevB.78.245115

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title = "Spiral spin structures and origin of the magnetoelectric coupling in YMn2O5",

abstract = "By combining neutron four-circle diffraction and polarized neutron-diffraction techniques we have determined the complex spin structures of a multiferroic YMn2O5 that exhibits two ferroelectric phases at low temperatures. The obtained magnetic structure has spiral components in both the low-temperature ferroelectric phases that are magnetically commensurate and incommensurate, respectively. Among proposed microscopic theories for the magnetoelectric coupling, our results are consistent with both the spin-current mechanism and the magnetostriction mechanism. Our results also explain why the electric polarization changes at the low-temperature commensurate-to-incommensurate phase transition.",

author = "Kim, {J. H.} and Lee, {S. H.} and Park, {S. I.} and M. Kenzelmann and Harris, {A. B.} and J. Schefer and Chung, {J. H.} and Majkrzak, {C. F.} and M. Takeda and S. Wakimoto and Park, {S. Y.} and Cheong, {S. W.} and M. Matsuda and H. Kimura and Y. Noda and K. Kakurai",

year = "2008",

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doi = "10.1103/PhysRevB.78.245115",

language = "English",

volume = "78",

journal = "Physical Review B-Condensed Matter",

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T1 - Spiral spin structures and origin of the magnetoelectric coupling in YMn2O5

AU - Kim, J. H.

AU - Lee, S. H.

AU - Park, S. I.

AU - Kenzelmann, M.

AU - Harris, A. B.

AU - Schefer, J.

AU - Chung, J. H.

AU - Majkrzak, C. F.

AU - Takeda, M.

AU - Wakimoto, S.

AU - Park, S. Y.

AU - Cheong, S. W.

AU - Matsuda, M.

AU - Kimura, H.

AU - Noda, Y.

AU - Kakurai, K.

PY - 2008/12/1

Y1 - 2008/12/1

N2 - By combining neutron four-circle diffraction and polarized neutron-diffraction techniques we have determined the complex spin structures of a multiferroic YMn2O5 that exhibits two ferroelectric phases at low temperatures. The obtained magnetic structure has spiral components in both the low-temperature ferroelectric phases that are magnetically commensurate and incommensurate, respectively. Among proposed microscopic theories for the magnetoelectric coupling, our results are consistent with both the spin-current mechanism and the magnetostriction mechanism. Our results also explain why the electric polarization changes at the low-temperature commensurate-to-incommensurate phase transition.

AB - By combining neutron four-circle diffraction and polarized neutron-diffraction techniques we have determined the complex spin structures of a multiferroic YMn2O5 that exhibits two ferroelectric phases at low temperatures. The obtained magnetic structure has spiral components in both the low-temperature ferroelectric phases that are magnetically commensurate and incommensurate, respectively. Among proposed microscopic theories for the magnetoelectric coupling, our results are consistent with both the spin-current mechanism and the magnetostriction mechanism. Our results also explain why the electric polarization changes at the low-temperature commensurate-to-incommensurate phase transition.

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U2 - 10.1103/PhysRevB.78.245115

DO - 10.1103/PhysRevB.78.245115

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JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

IS - 24

M1 - 245115

ER -

Spiral spin structures and origin of the magnetoelectric coupling in YMn₂O₅

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