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Pis'ma v Zh. Èksper. Teoret. Fiz., 2002, Volume 76, Issue 11, Pages 794–798 (Mi jetpl2995)  

CONDENSED MATTER

Observation of subgap resistive oscillations in doubly connected $SNS$ systems with the suppressed proximity effect

Yu. N. Chiang, O. G. Shevchenko

B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, Khar'kov

Abstract: Phase-sensitive magnetoresistive oscillations were observed at temperatures $T<4 $ K in hybrid quasi ballistic doubly connected $SNS$ structures with single-crystal normal spacers of macroscopic sizes in all dimensions ($L=100\div500 \mu m$) and elastic electron mean free path on the same scale $l_{el}\sim100\mu m$. The oscillations observed for the distances corresponding to the indicated $L$ values between the $NS$ interfaces are evidence that the phase-interruption length in pure metal is macroscopic at $T<4 $ K. The oscillation parameters related to the geometry of structures and spacer sizes indicate the quantum nature of the oscillations. These are shown to reflect the behavior of conductance in the $NS$ interfaces with the dissipative coherent transport of «subgap» quasiparticles with energies $\varepsilon \ll \Delta, T (\Delta$ is the gap energy).

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English version:
Journal of Experimental and Theoretical Physics Letters, 2002, 76:11, 670–674

Document Type: Article
PACS: 73.23.-b, 73.40.-c, 74.50.+r
Received: 21.06.2002
Revised: 31.10.2002

Citation: Yu. N. Chiang, O. G. Shevchenko, “Observation of subgap resistive oscillations in doubly connected $SNS$ systems with the suppressed proximity effect”, Pis'ma v Zh. Èksper. Teoret. Fiz., 76:11 (2002), 794–798; JETP Letters, 76:11 (2002), 670–674

Citation in format AMSBIB
\Bibitem{ChiShe02}
\by Yu.~N.~Chiang, O.~G.~Shevchenko
\paper Observation of subgap resistive oscillations in doubly connected $SNS$ systems with the suppressed proximity effect
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2002
\vol 76
\issue 11
\pages 794--798
\mathnet{http://mi.mathnet.ru/jetpl2995}
\transl
\jour JETP Letters
\yr 2002
\vol 76
\issue 11
\pages 670--674
\crossref{https://doi.org/10.1134/1.1545581}
\scopus{http://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-0040669527}


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