Effect of disorder on the nondissipative drag between two mesoscopic metal rings

John Baker, Giovanni Vignale, A. G. Rojo
1999 Physical Review B (Condensed Matter)  
In this paper, we consider the effect of disorder on the nondissipative Coulomb drag between two mesoscopic metal rings at zero temperature. Ring 1 has an Aharonov-Bohm flux present, which creates a persistent current J 0 . Ring 2 interacts with ring 1 via the Coulomb potential and a drag current, J d is produced. We show that this drag current persists with finite disorder in each ring, and that for small disorder, J d decreases with the square of the disorder amplitude. We present analytical
more » ... present analytical as well as numerical results indicating that the drag current has a stronger dependence on disorder than the single-ring persistent current. ͓S0163-1829͑99͒01136-4͔ PRB 60 8805 EFFECT OF DISORDER ON THE NONDISSIPATIVE . . .
doi:10.1103/physrevb.60.8804 fatcat:s3has35hy5akzjdd3seivtnyay