%0 Journal Article
%T Spin-orbit and exchange interaction in a HgMnTe magnetic two-dimensional electron gas<br>HgMnTe磁性二维电子气自旋-轨道和交换相互作用研究
%A Qiu Zhi-Jun
%A Gui Yong-Sheng
%A Shu Xiao-Zhou
%A Dai Ning
%A Guo Shao-Ling
%A Chu Jun-Hao
%A <br>仇志军
%A 桂永胜
%A 疏小舟
%A 戴 宁
%A 郭少令
%A 禇君浩
%J 物理学报
%D 2004
%I 
%X Spin orbit interaction and sp d exchange interaction are investigated by analyzing beating patterns of Shubnikov de Hass oscillations in a HgMnTe magnetic two dimensional electron gas (2DEG) at various temperatures. The results show that (1) spin orbit interaction results in zero magnetic field spin splitting in 2DEG; (2) spin orbit interaction is dominant at low magnetic field, and the total spin splitting decreases with increasing magnetic field due to the influence of Landau splitting and Zeeman splitting; (3) at a high magnetic field, the sp d exchange interaction tends to saturate and the spin splitting corresponds to Zeeman splitting. The experiments demonstrate that the spin splitting deduced from fast Fourier transformation (FFT) of SdH oscillations versus. 1/ B is different from zero magnetic field spin splitting when Zeeman spin splitting is comparable to zero magnetic field spin splitting.
%K magnetic two-dimensional electron gas
%K Zeeman splitting
%K Rashba spin splitting<br>磁性二维电子气
%K Zeeman分裂
%K Rashba自旋分裂
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=9128EC2CBE2A547F&yid=D0E58B75BFD8E51C&vid=8E6AB9C3EBAAE921&iid=B31275AF3241DB2D&sid=D3A55680A8B4A1DC&eid=E56875464B1C0EC1&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=18