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Induction of dc voltage, proportional to the persistent current, by external ac current on system of inhomogeneous superconducting loops

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arxiv cond-mat/0303538 v1 pith:OURK7S4H submitted 2003-03-26 cond-mat.supr-con cond-mat.stat-mech

S.V.Dubonos , V.I.Kuznetsov , I.N.Zhilyaev , A.V.Nikulov , A.A.Firsov This is my paper · ORCID
classification cond-mat.supr-concond-mat.stat-mech
keywords currentloopssystemvoltageexternalamplitudeobservedpersistent
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A dc voltage induced by an external ac current is observed in system of asymmetric mesoscopic superconducting loops. The value and sign of this dc voltage, like the one of the persistent current, depend in a periodical way on a magnetic field with period corresponded to the flux quantum within the loop. The amplitude of the oscillations does not depend on the frequency of the external ac current (in the investigated region 100 Hz - 1 MHz) and depends on its amplitude. The latter dependence is not monotonous. The observed phenomenon of rectification is interpreted as a consequence of a dynamic resistive state induced by superposition of the external current and the persistent current. It is shown that the dc voltage can be added in system of loops connected in series: the dc voltage oscillations with amplitude up to 0.00001 V were observed in single loop, up to 0.00004 V in a system of 3 loops and up to 0.0003 V in a system of 20 loops.

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Cited by 2 Pith papers

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  1. Voltage plateaus on V(I) curves of long quasi-one-dimensional superconducting wires (without microwave irradiation)

    cond-mat.supr-con 2019-08 conditional novelty 6.0 of 10

    Voltage plateaus in long superconducting wires appear at voltages V = 2Δ(T,B)/(ne) and are attributed to multiple Andreev reflection and quasiparticle overheating.

  2. Quantum magnetoresistive (hc/2e)/m periodic oscillations in a superconducting ring

    cond-mat.supr-con 2019-08 reject novelty 6.0 of 10

    The authors claim to observe (hc/2e)/m periodic magnetoresistance oscillations in an aluminum ring for m up to 20 and attribute them to multiple Andreev reflection, but the evidence rests on Fourier harmonics and qual...

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