A study on surface symmetry and interfacial enhancement of SrTiO_3 by second harmonic generation

查看全文 作　　者：ZHAO [1]RuiQiang;JIN [1]KuiJuan;GUO [1]HaiZhong;LU [1]HuiBin;YANG [1]GuoZhen

机构地区：[1]Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences

出　　处：《Science China(Physics,Mechanics & Astronomy)》索引2013年第56卷第12期,共7页

基　　金：supported by the National Basic Research Program of China(Grant Nos.2012CB921403 and 2013CB328706);the National Natural Science Foundation of China(Grant No.11134012) 摘　　要：The symmetry of the surfaces of SrTiO3and slightly Nb-doped SrTiO3crystals was investigated by the optical reflected second harmonic generation technique.The good agreement between experimental and theoretical results of the second harmonic intensity dependence on the azimuth angle indicates that the SrTiO3(001)surface is with 4mm symmetry and the Nb-doped SrTiO3(111)surface with 3m symmetry.The measurements of the polarization dependent second harmonic intensity confirm that conclusion.The enhancement of the surface polarization in the structure of SrTiO3capped La0.9Sr0.1MnO3films compared with that in the La0.9Sr0.1MnO3films has been obtained. 关键词：二次谐波产生表面极化钛酸锶对称性 SRTIO3 界面生成技术光学调查

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A study on surface symmetry and interfacial enhancement of SrTiO_3 by second harmonic generation

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