Multiple superconducting ring ratchets for ultrasensitive detection of non-equilibrium noise

V.L. Gurtovoi , M. Exarchos , V.N. Antonov , A.V. Nikulov , V.A. Tulin

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classification ❄️ cond-mat.supr-con cond-mat.mes-hall

keywords noiseasymmetricringsdetectionhelpnon-equilibriumquantumsuperconducting

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Magnetic quantum periodicity in the dc voltage is observed when asymmetric rings are switched between superconducting and normal state by a noise or ac current. This quantum effect is used for detection of a non-equilibrium noise with the help of a system of 667 asymmetric aluminum rings of $1 \ \mu m$ in diameter connected in series. Any noise down to the equilibrium one can be detected with the help of such system with enough great number of asymmetric rings.

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Multiple superconducting ring ratchets for ultrasensitive detection of non-equilibrium noise

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