Sublattice reversal in GaAs/Ge/GaAs and AlAs/Ge/AlAs heterostructures grown on (1 1 3)A and (1 1 3)B GaAs substrates

Add time:07/19/2019    Source:sciencedirect.com

GaAs/Ge/GaAs and AlAs/Ge/AlAs heterostructures were grown both on (1 1 3)B and (1 1 3)A GaAs substrates by molecular beam epitaxy. Sublattice reversal in these heterostructures were identified by comparing the anisotropic etching profile of the epitaxy sample with that for reference (1 1 3)B and (1 1 3)A GaAs substrates. Sublattice reversal in GaAs/Ge/GaAs heterostructures was achieved on (1 1 3)B GaAs substrate. On the other hand, sublattice reversal on (1 1 3)A GaAs substrate was obtained by using AlAs/Ge/AlAs heterostructures.

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