%0 Journal Article
%T First-principles study of structural instability and polarization in BaTiO3/SrTiO3 superlattice<br>应力作用下铁电超晶格BaTiO3/SrTiO3的结构和极化的第一性原理研究
%A Zhu Zhen-Ye
%A Wang Biao
%A Zheng Yue
%A Wang Hai
%A Li Qing-Kun
%A Li Chen-Liang
%A <br>朱振业
%A 王 彪
%A 郑 跃
%A 王 海
%A 李青坤
%A 李晨亮
%J 物理学报
%D 2007
%I 
%X We investigated structural instability and polarization of BaTiO3/SrTiO3 superlattice under stress by using first-principles calculation. Our results show that stress induces lattice distortion and charge transfer between Ti atom and O atom. With stress increasing,atomic displacement in BaTiO3/SrTiO3 superlattice grows gradually, resulting in the enhancement of polarization. Furthermore, polarization of superlattice BaTiO3/SrTiO3 can be controlled by changing the stress.
%K lattice distortion
%K stress
%K polarization
%K charge transfer<br>点阵扭曲，
%K 应力，
%K 极化，
%K 电荷传输
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=D45E604C75755CA3&yid=A732AF04DDA03BB3&vid=014B591DF029732F&iid=F3090AE9B60B7ED1&sid=1AA7E112757B3684&eid=F1065B8C8051E587&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=19