Origin of the large polarization in multiferroic YMnO 3 thin films revealed by soft- and hard-x-ray diffraction

H. Wadati; J. Okamoto; M. Garganourakis; V. Scagnoli; U. Staub; Y. Yamasaki; H. Nakao; Y. Murakami; M. Mochizuki; M. Nakamura; M. Kawasaki; Y. Tokura

doi:10.1103/PhysRevLett.108.047203

Origin of the large polarization in multiferroic YMnO ₃ thin films revealed by soft- and hard-x-ray diffraction

H. Wadati^*, J. Okamoto, M. Garganourakis, V. Scagnoli, U. Staub, Y. Yamasaki, H. Nakao, Y. Murakami, M. Mochizuki, M. Nakamura, M. Kawasaki, Y. Tokura

^*Corresponding author for this work

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

65 Citations (Scopus)

Abstract

We investigated the magnetic structure of an orthorhombic YMnO ₃ thin film by resonant soft x-ray and hard x-ray diffraction. We observed a temperature-dependent incommensurate magnetic reflection below 45 K and a commensurate lattice-distortion reflection below 35 K. These results demonstrate that the ground state is composed of coexisting E-type and cycloidal states. Their different ordering temperatures clarify the origin of the large polarization to be caused by the E-type antiferromagnetic states in the orthorhombic YMnO ₃ thin film.

Original language	English
Article number	047203
Journal	Physical Review Letters
Volume	108
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.108.047203
Publication status	Published - 2012 Jan 24
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1103/PhysRevLett.108.047203

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Wadati, H., Okamoto, J., Garganourakis, M., Scagnoli, V., Staub, U., Yamasaki, Y., Nakao, H., Murakami, Y., Mochizuki, M., Nakamura, M., Kawasaki, M., & Tokura, Y. (2012). Origin of the large polarization in multiferroic YMnO ₃ thin films revealed by soft- and hard-x-ray diffraction. Physical Review Letters, 108(4), Article 047203. https://doi.org/10.1103/PhysRevLett.108.047203

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AU - Wadati, H.

AU - Okamoto, J.

AU - Garganourakis, M.

AU - Scagnoli, V.

AU - Staub, U.

AU - Yamasaki, Y.

AU - Nakao, H.

AU - Murakami, Y.

AU - Mochizuki, M.

AU - Nakamura, M.

AU - Kawasaki, M.

AU - Tokura, Y.

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N2 - We investigated the magnetic structure of an orthorhombic YMnO 3 thin film by resonant soft x-ray and hard x-ray diffraction. We observed a temperature-dependent incommensurate magnetic reflection below 45 K and a commensurate lattice-distortion reflection below 35 K. These results demonstrate that the ground state is composed of coexisting E-type and cycloidal states. Their different ordering temperatures clarify the origin of the large polarization to be caused by the E-type antiferromagnetic states in the orthorhombic YMnO 3 thin film.

AB - We investigated the magnetic structure of an orthorhombic YMnO 3 thin film by resonant soft x-ray and hard x-ray diffraction. We observed a temperature-dependent incommensurate magnetic reflection below 45 K and a commensurate lattice-distortion reflection below 35 K. These results demonstrate that the ground state is composed of coexisting E-type and cycloidal states. Their different ordering temperatures clarify the origin of the large polarization to be caused by the E-type antiferromagnetic states in the orthorhombic YMnO 3 thin film.

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Origin of the large polarization in multiferroic YMnO ₃ thin films revealed by soft- and hard-x-ray diffraction

Abstract

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