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Experimental investigations of the change with magnetic flux of quantum number in superconducting ring

By A. V. Burlakov, V. L. Gurtovoi, A. I. Ilin, A. V. Nikulov and V. A. Tulin


The magnetic dependencies of the critical current of aluminum ring with asymmetric link-up of current leads have been measured in order to clear up the essence of the paradoxical absence of the jump of the critical current at the quantum number change revealed before at the measurements of asymmetric superconducting ring. The measurements have shown that the experimental and theoretical dependencies agree in the region of magnetic field corresponding to integer numbers of the flux quantum and disagree at the half of the flux quantum. The jump is not observed as well as in the asymmetric rings.Comment: 3 pages, 2 figures, for the Proceedings of 19th International Symposium "NANOSTRUCTURES: Physics and Technology", 20 - 25 June 2011, Ekaterinburg, Russi

Topics: Condensed Matter - Superconductivity, Quantum Physics
Year: 2011
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