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Weak antilocalization and beating pattern in an InGaAs/InAlAs quantum well

机译:InGaAs / InAlAs量子阱中的弱反定位和跳动模式

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摘要

We have observed the weak antilocalization (WAL) and beating SdH oscillation through magnetotransport measurements performed on a heavily δ-doped In_(0.52)Al_(0.48)As/In_(0.53)Ga_(0.47)As/In_(0.52)Al_(0.48)As single quantum well in an applied magnetic field up to 13 T and a temperature at 1.5 K. Both effects are caused by the strong Rashba spin-orbit (SO) coupling due to high structure inversion asymmetry (SIA). The Rashba SO coupling constant α and zerofield spin splitting Δ_0 are estimated and the obtained values are consistent from different analysis for this sample.
机译:我们已经观察到通过对重δ掺杂的In_(0.52)Al_(0.48)As / In_(0.53)Ga_(0.47)As / In_(0.52)Al_(0.48)进行的磁传输测量而观察到的弱反定位(WAL)和拍打SdH振荡)作为单量子阱,在高达13 T的外加磁场和1.5 K的温度下。这两种效应都是由于高结构反对称性(SIA)导致的强Rashba自旋轨道(SO)耦合引起的。估算了Rashba SO耦合常数α和零场自旋分裂Δ_0,并且从该样品的不同分析中获得的值是一致的。

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