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In AlGaN/GaN asymmetric QWs, the calculated Rashba parameters and the Rashba spin splitting increase linearly with the symmetry parameter σ (the ratio of height between the left and the right barrier), while the intersubband spin–orbit (SO) parameter decreases with σ increasing from 0.4 to 1.4. The dominant contribution to the SO parameters is from the well, next comes the contribution of the heterointerface,...
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