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
TL;DR
This paper investigates how Rashba spin-orbit interaction influences conductance oscillations in gate-controlled Aharonov-Bohm rings, revealing the interplay of h/e and h/2e oscillations through scattering matrix analysis.
Contribution
It introduces a detailed analysis of quantum scatterers' effects on conductance oscillations in Aharonov-Bohm rings with Rashba spin-orbit interaction, highlighting phase variations.
Findings
Quantum scatterers affect transmission and reflection phases.
The parity of conductance oscillations is influenced by scatterer-induced phase shifts.
Interplay of h/e and h/2e oscillations is characterized by scattering effects.
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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