Coulomb Drag between One-Dimensional Wigner Crystal Rings

Details Coulomb Drag between One-Dimensional Wigner Crystal Rings Coulomb Drag between One-Dimensional Wigner Crystal Rings

2001-01-19

arxiv.org/abs/cond-mat/0101312v1

Physics

Condensed Matter

Strongly Correlated Electrons

12 pages, 10 figures

Scientific paper

10.1088/0953-8984/13/22/323

We consider the Coulomb drag between two metal rings in which the long range Coulomb interaction leads to the formation of a Wigner crystal. The first ring is threaded by an Ahranov Bohm flux creating a persistent current J_0. The second ring is brought in close proximity to the second and due to the Coulomb interaction between the two rings a drag current J_D is produced in the second. We investigate this system at zero temperature for perfect rings as well as the effects of impurities. We show that the Wigner crystal state can in principle lead to a higher ratio of drag current to drive current J_D/J_0 than in weakly interacting electron systems.

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