Sextic Anharmonicity and Ferroelectricity in Photoexcited SrTiO3 at Low Temperatures
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- 作者：Yu Qiu
- 所属单位：数理与信息工程学院
- 文献类型：期刊
- 发表时间：2007-01-01
- 发表刊物：New Journal of Physics
- 卷号：Vol.9
- 期号：NO.9
- Issn号：1367-2630
- 是否译文：否
- 摘要：Ultraviolet light induces ferroelectric domains in SrTiO 3 at low temperatures. The ferroelectric domains are related to anharmonic soft modes of the crystal. We show the sextic anharmonicity is the lowest order for the soft mode to give rise to ferroele
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