Abstract
We use the Effective Bond Orbital Model (EBOM) method to examine the spin splitting due to the Rashba effect in AlSb/InAs/GaSb asymmetric heterostructures. We have explored different thicknesses of the constituent materials and we have found for the resulting two-dimensional electron gas (2DEG) in the optimized structure a theoretical value of the Rashba constant α R = 51 × 10−10 eV·cm. This is, to our knowledge, the largest predicted value for this parameter. We provide an intuitive explanation for the behavior of the spins in the 2DEG. Finally, we study the effect of wide layers on the Rashba coefficient.
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