Effect of spin–orbit interaction in an InGaAs-based Aharonov–Bohm ring structure

The interference effect in a gate controlled mesoscopic Aharonov–Bohm ring structure is studied in the presence of spin–orbit interaction. After ensemble averaging, the Fourier spectrum of h/2e oscillations as a function of gate voltage showed an oscillatory behavior. The oscillatory behavior is possibly due to the Aharonov–Casher type interference.