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- Title
A ferroelectric-like structural transition in a metal.
- Authors
Shi, Youguo; Guo, Yanfeng; Wang, Xia; Princep, Andrew J.; Khalyavin, Dmitry; Manuel, Pascal; Michiue, Yuichi; Sato, Akira; Tsuda, Kenji; Yu, Shan; Arai, Masao; Shirako, Yuichi; Akaogi, Masaki; Wang, Nanlin; Yamaura, Kazunari; Boothroyd, Andrew T.
- Abstract
Metals cannot exhibit ferroelectricity because static internal electric fields are screened by conduction electrons, but in 1965, Anderson and Blount predicted the possibility of a ferroelectric metal, in which a ferroelectric-like structural transition occurs in the metallic state. Up to now, no clear example of such a material has been identified. Here we report on a centrosymmetric () to non-centrosymmetric (R3c) transition in metallic LiOsO3 that is structurally equivalent to the ferroelectric transition of LiNbO3 (ref. ). The transition involves a continuous shift in the mean position of Li+ ions on cooling below 140 K. Its discovery realizes the scenario described in ref. , and establishes a new class of materials whose properties may differ from those of normal metals.
- Subjects
FERROELECTRIC crystals; TRANSITION metals; FERROELECTRICITY; CONDUCTION electrons; PREDICTION models
- Publication
Nature Materials, 2013, Vol 12, Issue 11, p1024
- ISSN
1476-1122
- Publication type
Article
- DOI
10.1038/nmat3754