Multiple superconducting ring ratchets for ultrasensitive detection of non-equilibrium noises. / Gurtovoi, Vladimir; Exarchos, Michael; Antonov, Vladimir; Nikulov, A.V.; Tulin, V. A. .

In: Applied Physics Letters, Vol. 109, No. 3, 032602, 18.07.2016, p. 1-4.

Research output: Contribution to journalArticlepeer-review

E-pub ahead of print




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 the detection of a non-equilibrium noise using a system of 667 asymmetric aluminum rings of 1 um diameter connected in series. Any noise down to the equilibrium one can be detected with large number of asymmetric rings. The equilibrium noise can induce the dc voltage close to the superconducting transition. In our sample we observe the dc voltage oscillation only below the superconducting transition.
Original languageEnglish
Article number032602
Pages (from-to)1-4
Number of pages4
JournalApplied Physics Letters
Issue number3
Early online date18 Jul 2016
Publication statusE-pub ahead of print - 18 Jul 2016
This open access research output is licenced under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.

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