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- Title
Ferroelectric-like metallic state in electron doped BaTiO<sub>3</sub>.
- Authors
Fujioka, J.; Doi, A.; Okuyama, D.; Morikawa, D.; Arima, T.; Okada, K. N.; Kaneko, Y.; Fukuda, T.; Uchiyama, H.; Ishikawa, D.; Baron, A. Q. R.; Kato, K.; Takata, M.; Tokura, Y.
- Abstract
We report that a ferroelectric-like metallic state with reduced anisotropy of polarization is created by the doping of conduction electrons into BaTiO3, on the bases of x-ray/electron diffraction and infrared spectroscopic experiments. The crystal structure is heterogeneous in nanometer-scale, as enabled by the reduced polarization anisotropy. The enhanced infrared intensity of soft phonon along with the resistivity reduction suggests the presence of unusual electron-phonon coupling, which may be responsible for the emergent ferroelectric structure compatible with metallic state.
- Subjects
FERROELECTRICITY; ANISOTROPY; ELECTRONS; INFRARED spectroscopy; X-ray diffraction
- Publication
Scientific Reports, 2015, p13207
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/srep13207