Ferroelectricity driven by y d0-ness with rehybridization in YMnO3

D. Y. Cho; J. Y. Kim; B. G. Park; K. J. Rho; J. H. Park; H. J. Noh; B. J. Kim; S. J. Oh; H. M. Park; J. S. Ahn; H. Ishibashi; S. W. Cheong; J. H. Lee; P. Murugavel; T. W. Noh; A. Tanaka; T. Jo

doi:10.1103/PhysRevLett.98.217601

Ferroelectricity driven by y d0-ness with rehybridization in YMnO3

D. Y. Cho
, J. Y. Kim
, B. G. Park
, K. J. Rho
, J. H. Park^*
, H. J. Noh
, B. J. Kim
, S. J. Oh
, H. M. Park
, J. S. Ahn
, H. Ishibashi
, S. W. Cheong
, J. H. Lee
, P. Murugavel
, T. W. Noh
, A. Tanaka
, T. Jo

^*Corresponding author for this work

Department of Physics

Seoul National University
Pohang University of Science and Technology
Korea Research Institute of Standards and Science
Rutgers - The State University of New Jersey, New Brunswick
Hiroshima University

Research output: Contribution to journal › Journal article › peer-review

125 Scopus citations

Abstract

We investigated electronic structure of hexagonal multiferroic YMnO3 using the polarization dependent x-ray absorption spectroscopy (XAS) at O K and Mn L2,3 edges. The spectra exhibit strong polarization dependence at both edges, reflecting anisotropic Mn 3d orbital occupation. Moreover, the O K edge spectra show that Y 4d states are strongly hybridized with O 2p ones, resulting in large anomalies in Born effective charges on off-centering Y and O ions. These results manifest that the Y d0-ness with rehybridization is the driving force for the ferroelectricity, and suggest a new approach to understand the multiferroicity in the hexagonal manganites.

Original language	English
Article number	217601
Journal	Physical Review Letters
Volume	98
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevLett.98.217601
State	Published - 2007.05.21

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Cho, D. Y., Kim, J. Y., Park, B. G., Rho, K. J., Park, J. H., Noh, H. J., Kim, B. J., Oh, S. J., Park, H. M., Ahn, J. S., Ishibashi, H., Cheong, S. W., Lee, J. H., Murugavel, P., Noh, T. W., Tanaka, A., & Jo, T. (2007). Ferroelectricity driven by y d0-ness with rehybridization in YMnO3. Physical Review Letters, 98(21), Article 217601. https://doi.org/10.1103/PhysRevLett.98.217601

@article{6358f8194320466c888993d464e305fd,

title = "Ferroelectricity driven by y d0-ness with rehybridization in YMnO3",

abstract = "We investigated electronic structure of hexagonal multiferroic YMnO3 using the polarization dependent x-ray absorption spectroscopy (XAS) at O K and Mn L2,3 edges. The spectra exhibit strong polarization dependence at both edges, reflecting anisotropic Mn 3d orbital occupation. Moreover, the O K edge spectra show that Y 4d states are strongly hybridized with O 2p ones, resulting in large anomalies in Born effective charges on off-centering Y and O ions. These results manifest that the Y d0-ness with rehybridization is the driving force for the ferroelectricity, and suggest a new approach to understand the multiferroicity in the hexagonal manganites.",

author = "Cho, \{D. Y.\} and Kim, \{J. Y.\} and Park, \{B. G.\} and Rho, \{K. J.\} and Park, \{J. H.\} and Noh, \{H. J.\} and Kim, \{B. J.\} and Oh, \{S. J.\} and Park, \{H. M.\} and Ahn, \{J. S.\} and H. Ishibashi and Cheong, \{S. W.\} and Lee, \{J. H.\} and P. Murugavel and Noh, \{T. W.\} and A. Tanaka and T. Jo",

year = "2007",

month = may,

day = "21",

doi = "10.1103/PhysRevLett.98.217601",

language = "English",

volume = "98",

journal = "Physical Review Letters",

issn = "0031-9007",

number = "21",

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TY - JOUR

T1 - Ferroelectricity driven by y d0-ness with rehybridization in YMnO3

AU - Cho, D. Y.

AU - Kim, J. Y.

AU - Park, B. G.

AU - Rho, K. J.

AU - Park, J. H.

AU - Noh, H. J.

AU - Kim, B. J.

AU - Oh, S. J.

AU - Park, H. M.

AU - Ahn, J. S.

AU - Ishibashi, H.

AU - Cheong, S. W.

AU - Lee, J. H.

AU - Murugavel, P.

AU - Noh, T. W.

AU - Tanaka, A.

AU - Jo, T.

PY - 2007/5/21

Y1 - 2007/5/21

N2 - We investigated electronic structure of hexagonal multiferroic YMnO3 using the polarization dependent x-ray absorption spectroscopy (XAS) at O K and Mn L2,3 edges. The spectra exhibit strong polarization dependence at both edges, reflecting anisotropic Mn 3d orbital occupation. Moreover, the O K edge spectra show that Y 4d states are strongly hybridized with O 2p ones, resulting in large anomalies in Born effective charges on off-centering Y and O ions. These results manifest that the Y d0-ness with rehybridization is the driving force for the ferroelectricity, and suggest a new approach to understand the multiferroicity in the hexagonal manganites.

AB - We investigated electronic structure of hexagonal multiferroic YMnO3 using the polarization dependent x-ray absorption spectroscopy (XAS) at O K and Mn L2,3 edges. The spectra exhibit strong polarization dependence at both edges, reflecting anisotropic Mn 3d orbital occupation. Moreover, the O K edge spectra show that Y 4d states are strongly hybridized with O 2p ones, resulting in large anomalies in Born effective charges on off-centering Y and O ions. These results manifest that the Y d0-ness with rehybridization is the driving force for the ferroelectricity, and suggest a new approach to understand the multiferroicity in the hexagonal manganites.

UR - https://www.scopus.com/pages/publications/34547343704

U2 - 10.1103/PhysRevLett.98.217601

DO - 10.1103/PhysRevLett.98.217601

M3 - Journal article

AN - SCOPUS:34547343704

SN - 0031-9007

VL - 98

JO - Physical Review Letters

JF - Physical Review Letters

IS - 21

M1 - 217601

ER -

Ferroelectricity driven by y d0-ness with rehybridization in YMnO3

Abstract

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