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arXiv · 1303.4208

Quantization of diamagnetic current in a superconducting ring with the Josephson point contact

S. I. Bondarenko·V. P. Koverya·A. V. Krevsun·N. M. Levchenko
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Abstract

It was established experimentally that a critical value of the diamagnetic current, excited by an external magnetic field in a superconducting ring (with an inductance of about ~ 10^-6 H) with a Nb-Nb clamping point contact having the Josephson contact properties is a strictly periodic function of field strength, despite the complex microstructure of the clamping contact. The reasons of the periodic dependence are discussed on a basis of the interference model of diamagnetic current and quantized values of the circulating current in the microinterferometer formed by the clamping contact.

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S. I. Bondarenko, V. P. Koverya, A. V. Krevsun, N. M. Levchenko. 2013-03-18. Quantization of diamagnetic current in a superconducting ring with the Josephson point contact. https://doi.org/10.1063/1.3699955

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