Aharonov-Bohm effect in many-electron quantum rings

Abstract

The Aharonov-Bohm effect is investigated in two-dimensional, single-terminal quantum rings in magnetic fields by using time-dependent density-functional theory. We find multiple transport loops leading to the oscillation periods of h/(en), where n is the number of loops. We show that the Aharonov-Bohm oscillations are relatively weakly affected by the electron-electron interactions, whereas the ring width has a strong effect on the characteristics of the oscillations. Our results propose that in experimental quantum-ring devices showing clear Aharonov-Bohm oscillations the electron current is dominated by a few states along narrow conduction channels.

References in corpus (3)

• Microscopic Current Dynamics in Nanoscale Junctions
• Quantum mechanical complementarity probed in a closed-loop Aharonov-Bohm interferometer
• Aharonov-Bohm oscillations in a mesoscopic ring with asymmetric arm-dependent injection

Cited by in corpus (5)

• Fractal Dynamics in Chaotic Quantum Transport
• Numerical cookbook for electronic quantum transport at finite frequency
• Magnetic edge states in Aharonov-Bohm graphene quantum rings
• Thermoelectric performance of quantum dots embedded in an Aharonov-Bohm ring: a Pauli master equation approach
• Many-electron transport in Aharonov-Bohm interferometers: Time-dependent density-functional study