Anomalous Rashba spin splitting in two-dimensional hole systems
Anomalous Rashba spin splitting in two-dimensional hole systems
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DOI：
10.1103/physrevb.65.155303
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发表时间：
2001-06
影响因子：
3.7
通讯作者：
R. Winkler;H. Noh;E. Tutuc;M. Shayegan
中科院分区：
文献类型：
--
作者：
R. Winkler;H. Noh;E. Tutuc;M. Shayegan
长期以来，人们一直认为零磁场下二维系统中由反转不对称性引起的Rashba自旋分裂与表征禁闭势反转不对称性的电场成正比。在这里，我们从理论和实验上证明了堆积层状单异质结中的2D重空穴系统表现出相反的行为，即电场减小但非零导致Rashba系数增加。
It has long been assumed that the inversion asymmetry-induced Rashba spin splitting in two-dimensional (2D) systems at zero magnetic field is proportional to the electric field that characterizes the inversion asymmetry of the confining potential. Here we demonstrate, both theoretically and experimentally, that 2D heavy hole systems in accumulation-layer-like single heterostructures show the opposite behavior; i.e., a decreasing, but nonzero electric field results in an increasing Rashba coefficient.