Control of the persistent currents in two interacting quantum rings through the Coulomb interaction and inter-ring tunneling

Details Control of the persistent currents in two interacting quantum rings through the Coulomb interaction and inter-ring tunneling Control of the persistent currents in two interacting quantum rings through the Coulomb interaction and inter-ring tunneling

2008-10-31

arxiv.org/abs/0810.5726v1

Phys. Rev. B 78, 195315 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

accepted for publication in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.78.195315

The persistent current in two vertically coupled quantum rings containing few
electrons is studied. We find that the Coulomb interaction between the rings in
the absence of tunneling affects the persistent current in each ring and the
ground state configurations. Quantum tunneling between the rings alters
significantly the ground state and the persistent current in the system.

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