Persistent currents in the presence of a transport current

A. M. Jayannavar and P. Singha Deo
Phys. Rev. B 51, 10175 – Published 15 April 1995
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Abstract

We have considered a system of a metallic ring coupled to two electron reservoirs. We show that in the presence of a transport current, the persistent current can flow in a ring, even in the absence of a magnetic field. This is purely a quantum effect and is related to the current magnification in the loop. These persistent currents can be observed if one tunes the Fermi energy near the antiresonances of the total transmission coefficient or the two-port conductance.

  • Received 26 October 1994

DOI:https://doi.org/10.1103/PhysRevB.51.10175

©1995 American Physical Society

Authors & Affiliations

A. M. Jayannavar and P. Singha Deo

  • Institute of Physics, Sachivalaya Marg, Bhubaneswar 751005, India

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Issue

Vol. 51, Iss. 15 — 15 April 1995

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