%0 Journal Article
%T The factors influencing spin-polarized transport in magnetic pn junction<br>影响磁性pn结自旋极化输运特性的因素
%A He Zhi-Gang
%A Cheng Xing-Hu
%A Gong Min
%A Cai Juan-Lu
%A Shi Rui-Ying
%A <br>何志刚
%A 程兴华
%A 龚敏
%A 蔡娟露
%A 石瑞英
%J 物理学报
%D 2010
%I 
%X Spin-polarized transport in magnetic pn junction has been theoretically studied by using the drift-diffusive theory. The factors considered include bias voltage, equilibrium spin polarization,spin injection and spin life time, which could effectively affect the current density and resistance. The connection between spin-voltaic effect of the magnetic pn junction and thickness of the junction was also discussed. It is found that the equilibrium spin polarization makes the spin electrons with different orientations (up or down) have different barriers, which makes the current effectively modulated. However, the spin injection modulates the current by providing non-equilibrium spin electrons in the magnetic pn junction. It is also found that the spin-voltaic current is sensitive to quasi-neutral p-type region width.
%K magnetic pn junction
%K spin-polarization
%K spin life time
%K spin-voltaic effect<br>磁性pn结
%K 自旋极化率
%K 自旋寿命
%K 自旋伏特效应
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=17CC51A39D261328F1D96221FC8549F1&yid=140ECF96957D60B2&vid=6AC2A205FBB0EF23&iid=9CF7A0430CBB2DFD&sid=48EB452A3150EB10&eid=5B783D6454827C30&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=15