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Coulomb drag in mesoscopic rings

T. V. Shahbazyan·S. E. Ulloa
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Abstract

We develop a Luttinger liquid theory of the Coulomb drag of persistent currents flowing in concentric mesoscopic rings, by incorporating non-linear corrections to the electron dispersion relation. We demonstrate that at low temperatures, interactions between electrons in different rings generate an additional phase and thus alter the period of Aharonov-Bohm oscillations. The resulting nondissipative drag depends strongly on the relative parity of the electron numbers. We also show that interactions set a new temperature scale below which the linear response theory does not apply at certain values of external flux.

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T. V. Shahbazyan, S. E. Ulloa. 1996-11-30. Coulomb drag in mesoscopic rings. https://doi.org/10.1103/physrevb.55.13702

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