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The effect of orbital-lattice coupling on the electrical resistivity of YBaCuFeO(5) investigated by X-ray absorption

Temperature-dependent X-ray absorption near-edge structures, X-ray linear dichroism (XLD) and extended X-ray absorption fine structure (EXAFS) spectroscopic techniques were used to investigate the valence state, preferred orbital and local atomic structure that significantly affect the electrical an...

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Autores principales: Srivastava, M. K., Qiu, X.-S., Chin, Y. Y., Hsieh, S. H., Shao, Y. C., Liang, Y.-H., Lai, C.-H., Du, C. H., Wang, H. T., Chiou, J. W., Lai, Y. C., Tsai, H. M., Pao, C. W., Lin, H. J., Lee, J. F., Asokan, K., Pong, W. F.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6901513/
https://www.ncbi.nlm.nih.gov/pubmed/31819082
http://dx.doi.org/10.1038/s41598-019-54772-0
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author Srivastava, M. K.
Qiu, X.-S.
Chin, Y. Y.
Hsieh, S. H.
Shao, Y. C.
Liang, Y.-H.
Lai, C.-H.
Du, C. H.
Wang, H. T.
Chiou, J. W.
Lai, Y. C.
Tsai, H. M.
Pao, C. W.
Lin, H. J.
Lee, J. F.
Asokan, K.
Pong, W. F.
author_facet Srivastava, M. K.
Qiu, X.-S.
Chin, Y. Y.
Hsieh, S. H.
Shao, Y. C.
Liang, Y.-H.
Lai, C.-H.
Du, C. H.
Wang, H. T.
Chiou, J. W.
Lai, Y. C.
Tsai, H. M.
Pao, C. W.
Lin, H. J.
Lee, J. F.
Asokan, K.
Pong, W. F.
author_sort Srivastava, M. K.
collection PubMed
description Temperature-dependent X-ray absorption near-edge structures, X-ray linear dichroism (XLD) and extended X-ray absorption fine structure (EXAFS) spectroscopic techniques were used to investigate the valence state, preferred orbital and local atomic structure that significantly affect the electrical and magnetic properties of a single crystal of YBaCuFeO(5) (YBCFO). An onset of increase of resistivity at ~180 K, followed by a rapid increase at/below 125 K, is observed. An antiferromagnetic (AFM)-like transition is close to the temperature at which the resistivity starts to increase in the ab-plane and is also observed with strong anisotropy between the ab-plane and the c-axis. The XLD spectra at the Fe L(3,2)-edge revealed a change in Fe 3d e(g) holes from the preferential [Formula: see text] orbital at high temperature (300–150 K) to the [Formula: see text] orbital at/below 125 K. The analysis of the Fe K-edge EXAFS data of YBCFO further revealed an unusual increase in the Debye-Waller factor of the nearest-neighbor Fe-O bond length at/below 125 K, suggesting phonon-softening behavior, resulting in the breaking of lattice symmetry, particularly in the ab-plane of Fe-related square pyramids. These findings demonstrate a close correlation between electrical resistivity and coupling of the preferred Fe 3d orbital with lattice distortion of a single crystal of YBCFO.
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spelling pubmed-69015132019-12-12 The effect of orbital-lattice coupling on the electrical resistivity of YBaCuFeO(5) investigated by X-ray absorption Srivastava, M. K. Qiu, X.-S. Chin, Y. Y. Hsieh, S. H. Shao, Y. C. Liang, Y.-H. Lai, C.-H. Du, C. H. Wang, H. T. Chiou, J. W. Lai, Y. C. Tsai, H. M. Pao, C. W. Lin, H. J. Lee, J. F. Asokan, K. Pong, W. F. Sci Rep Article Temperature-dependent X-ray absorption near-edge structures, X-ray linear dichroism (XLD) and extended X-ray absorption fine structure (EXAFS) spectroscopic techniques were used to investigate the valence state, preferred orbital and local atomic structure that significantly affect the electrical and magnetic properties of a single crystal of YBaCuFeO(5) (YBCFO). An onset of increase of resistivity at ~180 K, followed by a rapid increase at/below 125 K, is observed. An antiferromagnetic (AFM)-like transition is close to the temperature at which the resistivity starts to increase in the ab-plane and is also observed with strong anisotropy between the ab-plane and the c-axis. The XLD spectra at the Fe L(3,2)-edge revealed a change in Fe 3d e(g) holes from the preferential [Formula: see text] orbital at high temperature (300–150 K) to the [Formula: see text] orbital at/below 125 K. The analysis of the Fe K-edge EXAFS data of YBCFO further revealed an unusual increase in the Debye-Waller factor of the nearest-neighbor Fe-O bond length at/below 125 K, suggesting phonon-softening behavior, resulting in the breaking of lattice symmetry, particularly in the ab-plane of Fe-related square pyramids. These findings demonstrate a close correlation between electrical resistivity and coupling of the preferred Fe 3d orbital with lattice distortion of a single crystal of YBCFO. Nature Publishing Group UK 2019-12-09 /pmc/articles/PMC6901513/ /pubmed/31819082 http://dx.doi.org/10.1038/s41598-019-54772-0 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Srivastava, M. K.
Qiu, X.-S.
Chin, Y. Y.
Hsieh, S. H.
Shao, Y. C.
Liang, Y.-H.
Lai, C.-H.
Du, C. H.
Wang, H. T.
Chiou, J. W.
Lai, Y. C.
Tsai, H. M.
Pao, C. W.
Lin, H. J.
Lee, J. F.
Asokan, K.
Pong, W. F.
The effect of orbital-lattice coupling on the electrical resistivity of YBaCuFeO(5) investigated by X-ray absorption
title The effect of orbital-lattice coupling on the electrical resistivity of YBaCuFeO(5) investigated by X-ray absorption
title_full The effect of orbital-lattice coupling on the electrical resistivity of YBaCuFeO(5) investigated by X-ray absorption
title_fullStr The effect of orbital-lattice coupling on the electrical resistivity of YBaCuFeO(5) investigated by X-ray absorption
title_full_unstemmed The effect of orbital-lattice coupling on the electrical resistivity of YBaCuFeO(5) investigated by X-ray absorption
title_short The effect of orbital-lattice coupling on the electrical resistivity of YBaCuFeO(5) investigated by X-ray absorption
title_sort effect of orbital-lattice coupling on the electrical resistivity of ybacufeo(5) investigated by x-ray absorption
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6901513/
https://www.ncbi.nlm.nih.gov/pubmed/31819082
http://dx.doi.org/10.1038/s41598-019-54772-0
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