A unipolar spin transistor includes a semiconductor material having a first region, a second region, and a third region. The first region is adjacent to the second region so as to form a first domain between the first region and the second region, and the second region is adjacent to the third region...http://www.google.com.tw/patents/US6919213?utm_source=gb-gplus-share專利 US6919213 - Methods for operating a unipolar spin transistor and applications of same
