Interplay of h/e and h/2e Oscillations in Gate-Controlled Aharonov-Bohm Rings
I. A. Shelykh, N. T. Bagraev, N. G. Galkin, L. E. Klyachkin
Abstract
The spin-interference that is caused by the Rashba spin-orbit interaction in a gate-controlled Aharonov-Bohm ring is studied by the analysis of the conductance oscillations as a function of both the gate voltage and magnetic field. The scattering matrix approach is used to reveal the effect of the quantum scatterers connected to two one-dimensional leads on the phase of the transmission and reflection amplitudes. The variations of the transmission and reflection amplitudes that are caused by the quantum scatterers for the particles moving inside and outside rings are shown to define a parity of the and conductance oscillations.
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