倾斜磁场中二维电子气中DOS拍频的猝灭
Quenching of the DOS beats in a two-dimensional electron gas in tilted magnetic fields
摘要：
考虑了倾斜磁场作用下的二维电子气的Rashba自旋轨道相互作用和塞曼效应。假设相邻朗道能级的两个相反自旋态的几率相等，得到了本征值的精确解。没有相邻的本征能量之间的交叉观察到不同的在双磁场的情况下。交叉的缺乏导致猝灭拍结构的态密度（DOS）的振荡。在弱磁场区观察到持续的自旋劈裂。然而，分裂，可以有效地屏蔽增加朗道能级加宽。这些结果揭示了如何通过Rashba相互作用强度、无序相关的展宽和磁场倾斜角来控制自旋。
英文摘要：
A two-dimensional electron gas exposed to a tilted magnetic field is considered with the Rashba spin-orbit interaction and the Zeeman effect. An exact solution for the eigenvalues were obtained assuming that two opposite spin states of adjacent Landau levels have equal probability. No crossings between adjacent eigenenergies were observed unlike in the perpendicular-magnetic-field case. The absence of crossings lead to quenched beating structures in the oscillations of the density of states (DOS). Persistent spin-splittings were observed at the weak magnetic field region. The splittings, however, can be effectively screened by an increased Landau level broadening. The results shed light on how spins can be controlled through the Rashba interaction strength, the disorder-related broadening and the magnetic field tilt angle.
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