Aharonov-Bohm oscillations in disordered nanorings with quantum dots: Effect of electron-electron interactions

Details Aharonov-Bohm oscillations in disordered nanorings with quantum dots: Effect of electron-electron interactions Aharonov-Bohm oscillations in disordered nanorings with quantum dots: Effect of electron-electron interactions

2009-05-13

arxiv.org/abs/0905.2045v2

Physica E, vol 42, page 600 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, 4 figures. To be published in the Proceedings of FQMT08 Conference (Prague 2008), Physica E

Scientific paper

10.1016/j.physe.2009.06.063

We investigate the effect of electron-electron interactions on Aharonov-Bohm (AB) current oscillations in nanorings formed by a chain of metallic quantum dots. We demonstrate that electron-electron interactions cause electron dephasing thereby suppressing the amplitude of AB oscillations at all temperatures down to T=0. The crossover between thermal and quantum dephasing is found to be controlled by the ring perimeter. Our predictions can be directly tested in future experiments.

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