Anisotropic spin interference in InGaAs/InAlAs rectangular loop arrays

作者：Faniel S; Matsuura T; Mineshige S; Sekine Y; Koga Takaaki^*

来源：Physica E: Low-Dimensional Systems and Nanostructures , 2010, 42(4): 990-993.

DOI：10.1016/j.physe.2009.10.022

• Spin-orbit interaction
• Quantum interference
• AAS oscillations
• Aharonov-Casher effect
• InGaAs

We report the experimental detection of the anisotropic spin-orbit interaction (SOI) in InGaAs/InAlAs quantum wells, using spin interference experiments in arrays of rectangular loops with their sides aligned to the [1 1 0] and [1 (1) over bar 0] crystallographic directions. While the gate voltage is tuned, the time reversal Aharonov-Casher (TRAC) oscillations exhibit higher frequencies when the loops have their longer side along the [1 1 0] direction, clearly highlighting the anisotropy of the SOL We find that a simple spin interferometer model, including both the Rashba and the Dresselhaus SOIs, reproduces qualitatively the TRAC oscillations.

• 出版日期2010-2