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DOI | 10.1126/science.aaw4911 |
Metastable ferroelectricity in optically strained SrTiO3 | |
Nova, T. F.1,2; Disa, A. S.1; Fechner, M.1; Cavalleri, A.1,2,3 | |
2019-06-14 | |
发表期刊 | SCIENCE |
ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2019 |
卷号 | 364期号:6445页码:1075-+ |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; England |
英文摘要 | Fluctuating orders in solids are generally considered high-temperature precursors of broken symmetry phases. However, in some cases, these fluctuations persist to zero temperature and prevent the emergence of long-range order. Strontium titanate (SrTiO3) is a quantum paraelectric in which dipolar fluctuations grow upon cooling, although a long-range ferroelectric order never sets in. Here, we show that optical excitation of lattice vibrations can induce polar order. This metastable polar phase, observed up to temperatures exceeding 290 kelvin, persists for hours after the optical pump is interrupted. Furthermore, hardening of a low-frequency vibration points to a photoinduced ferroelectric phase transition, with a spatial domain distribution suggestive of a photoflexoelectric coupling. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000471306700042 |
WOS关键词 | LIGHT-INDUCED SUPERCONDUCTIVITY ; 2ND-HARMONIC GENERATION ; STRONTIUM-TITANATE ; RAMAN-SCATTERING ; TRANSITION ; PHASE ; SR1-XCAXTIO3 ; TOOL |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/201653 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Max Planck Inst Struct & Dynam Matter, D-22761 Hamburg, Germany; 2.Hamburg Ctr Ultrafast Imaging, D-22761 Hamburg, Germany; 3.Univ Oxford, Clarendon Lab, Oxford OX1 3PU, England |
推荐引用方式 GB/T 7714 | Nova, T. F.,Disa, A. S.,Fechner, M.,et al. Metastable ferroelectricity in optically strained SrTiO3[J]. SCIENCE,2019,364(6445):1075-+. |
APA | Nova, T. F.,Disa, A. S.,Fechner, M.,&Cavalleri, A..(2019).Metastable ferroelectricity in optically strained SrTiO3.SCIENCE,364(6445),1075-+. |
MLA | Nova, T. F.,et al."Metastable ferroelectricity in optically strained SrTiO3".SCIENCE 364.6445(2019):1075-+. |
条目包含的文件 | 条目无相关文件。 |
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