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Magnetic Frustration Driven by Itinerancy in Spinel CoV(2)O(4)

Localized spins and itinerant electrons rarely coexist in geometrically-frustrated spinel lattices. They exhibit a complex interplay between localized spins and itinerant electrons. In this paper, we study the origin of the unusual spin structure of the spinel CoV(2)O(4), which stands at the crossov...

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Autores principales: Lee, J. H., Ma, J., Hahn, S. E., Cao, H. B., Lee, M., Hong, Tao, Lee, H.-J., Yeom, M. S., Okamoto, S., Zhou, H. D., Matsuda, M., Fishman, R. S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5719412/
https://www.ncbi.nlm.nih.gov/pubmed/29215077
http://dx.doi.org/10.1038/s41598-017-17160-0
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author Lee, J. H.
Ma, J.
Hahn, S. E.
Cao, H. B.
Lee, M.
Hong, Tao
Lee, H.-J.
Yeom, M. S.
Okamoto, S.
Zhou, H. D.
Matsuda, M.
Fishman, R. S.
author_facet Lee, J. H.
Ma, J.
Hahn, S. E.
Cao, H. B.
Lee, M.
Hong, Tao
Lee, H.-J.
Yeom, M. S.
Okamoto, S.
Zhou, H. D.
Matsuda, M.
Fishman, R. S.
author_sort Lee, J. H.
collection PubMed
description Localized spins and itinerant electrons rarely coexist in geometrically-frustrated spinel lattices. They exhibit a complex interplay between localized spins and itinerant electrons. In this paper, we study the origin of the unusual spin structure of the spinel CoV(2)O(4), which stands at the crossover from insulating to itinerant behavior using the first principle calculation and neutron diffraction measurement. In contrast to the expected paramagnetism, localized spins supported by enhanced exchange couplings are frustrated by the effects of delocalized electrons. This frustration produces a non-collinear spin state even without orbital orderings and may be responsible for macroscopic spin-glass behavior. Competing phases can be uncovered by external perturbations such as pressure or magnetic field, which enhances the frustration.
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spelling pubmed-57194122017-12-08 Magnetic Frustration Driven by Itinerancy in Spinel CoV(2)O(4) Lee, J. H. Ma, J. Hahn, S. E. Cao, H. B. Lee, M. Hong, Tao Lee, H.-J. Yeom, M. S. Okamoto, S. Zhou, H. D. Matsuda, M. Fishman, R. S. Sci Rep Article Localized spins and itinerant electrons rarely coexist in geometrically-frustrated spinel lattices. They exhibit a complex interplay between localized spins and itinerant electrons. In this paper, we study the origin of the unusual spin structure of the spinel CoV(2)O(4), which stands at the crossover from insulating to itinerant behavior using the first principle calculation and neutron diffraction measurement. In contrast to the expected paramagnetism, localized spins supported by enhanced exchange couplings are frustrated by the effects of delocalized electrons. This frustration produces a non-collinear spin state even without orbital orderings and may be responsible for macroscopic spin-glass behavior. Competing phases can be uncovered by external perturbations such as pressure or magnetic field, which enhances the frustration. Nature Publishing Group UK 2017-12-07 /pmc/articles/PMC5719412/ /pubmed/29215077 http://dx.doi.org/10.1038/s41598-017-17160-0 Text en © The Author(s) 2017 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
Lee, J. H.
Ma, J.
Hahn, S. E.
Cao, H. B.
Lee, M.
Hong, Tao
Lee, H.-J.
Yeom, M. S.
Okamoto, S.
Zhou, H. D.
Matsuda, M.
Fishman, R. S.
Magnetic Frustration Driven by Itinerancy in Spinel CoV(2)O(4)
title Magnetic Frustration Driven by Itinerancy in Spinel CoV(2)O(4)
title_full Magnetic Frustration Driven by Itinerancy in Spinel CoV(2)O(4)
title_fullStr Magnetic Frustration Driven by Itinerancy in Spinel CoV(2)O(4)
title_full_unstemmed Magnetic Frustration Driven by Itinerancy in Spinel CoV(2)O(4)
title_short Magnetic Frustration Driven by Itinerancy in Spinel CoV(2)O(4)
title_sort magnetic frustration driven by itinerancy in spinel cov(2)o(4)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5719412/
https://www.ncbi.nlm.nih.gov/pubmed/29215077
http://dx.doi.org/10.1038/s41598-017-17160-0
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