Photoinduced Local Symmetry Breaking in SrTiO3

被引：11
作者：
Nozawa, Shunsuke [1 ]
Iwazumi, Toshiaki [2 ]
Osawa, Hitoshi [3 ]
Uozumi, Takayuki [2 ]
机构：
[1] High Energy Accelerator Org, Inst Mat Struct Sci, Tsukuba, Ibaraki 3050801, Japan
[2] Osaka Prefecture Univ, Grad Sch Engn, Sakai, Osaka 5998531, Japan
[3] JASRI SPring 8, Sayo, Hyogo 6795198, Japan
来源：
APPLIED PHYSICS EXPRESS | 2013年 / 6卷 / 06期
关键词：
RESONANT RAMAN-SCATTERING; X-RAY-SCATTERING; DIELECTRIC-CONSTANT; PEROVSKITE OXIDES; ELECTRIC-FIELD; PRE-PEAKS; FERROELECTRICITY; SPECTRA; TIO2;
D O I：
10.7567/APEX.6.061501
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
By controlling quantum fluctuations within SrTiO3 with light, we were able to study photovariations in the localized Ti 3d electronic structure exploiting X-ray Raman features to analyze the photoinduced local symmetry breaking, which is the origin of an electric dipole moment. Crystal field photomodifications observed in these electronic structures give valuable theoretical identification of the photoinduced T-1u local atomic displacement. Furthermore, the strengthening of the T-1u displacement is clarified by photoinduced covalency enhancements in Ti 3d-O 2p bonds. (C) 2013 The Japan Society of Applied Physics
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页数：4
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