Flux effect in superconducting hybrid Aharonov-Bohm rings
T. H. Stoof, Yu. V. Nazarov
DOI 10.1103/PhysRevB.54.R772 · Physical Review B
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Abstract
We have extended the circuit theory of Andreev conductance [Phys. Rev. Lett. 73, 1420 (1994)] to diffusive superconducting hybrid structures that contain an Aharonov-Bohm ring. The electrostatic potential distribution in the system is predicted to be flux dependent with a period of the superconducting flux quantum Φ0=h2e. When at least one tunnel barrier is present, the conductance of the system oscillates with the same period.
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