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Uspekhi Fizicheskikh Nauk, 2001, Volume 171, supplement № 10, Pages 104–108 (Mi ufn5642)  

Superconductor-metal-insulator transitions

Fluctuation effects in high sheet resistance superconducting films

J. M. Valles Jr.a, J. A. Chervenaka, S.-Y. Hsub, T. Kouha

a Department of Physics, Brown University, Providence, RI USA
b Department of Electrophysics, National Chiao Tung University, Hsinchu 300, Taiwan
Abstract: As the normal-state sheet resistance, $R_n$, of a thinfilm superconductor increases, its superconducting properties degrade. For $R_n\simeq h/4e^2$ superconductivity disappears and a transition to a nonsuperconducting state occurs. We present electron tunneling and transport measurements on ultrathin, homogeneously disordered superconducting films in the vicinity of this transition. The data provide strong evidence that fluctuations in the amplitude of the superconducting order parameter dominate the tunneling density of states and the resistive transitions in this regime. We briefly discuss possible sources of these amplitude fluctuation effects. We also describe how the data suggest a novel picture of the superconductor-tononsuperconductor transition in homogeneous $\mathrm{2D}$ systems.
English version:
Physics–Uspekhi, 2001, Volume 44, Issue 10 suppl., Pages s104–s108
DOI: https://doi.org/10.1070/1063-7869/44/10S/S23
Bibliographic databases:
Document Type: Article
PACS: 71.30.+h, 73.23.Hk, 74.50.+r, 74.76.-w
Language: English
Citation: J. M. Valles Jr., J. A. Chervenak, S.-Y. Hsu, T. Kouh, “Fluctuation effects in high sheet resistance superconducting films”, UFN, 171, supplement № 10 (2001), 104–108; Phys. Usp., 44:10 suppl. (2001), s104–s108
Citation in format AMSBIB
\Bibitem{ValCheHsu01}
\by J.~M.~Valles~Jr., J.~A.~Chervenak, S.-Y.~Hsu, T.~Kouh
\paper Fluctuation effects in high sheet resistance superconducting films
\jour UFN
\yr 2001
\vol 171
\pages 104--108
\issueinfo supplement № 10
\mathnet{http://mi.mathnet.ru/ufn5642}
\adsnasa{https://adsabs.harvard.edu/cgi-bin/bib_query?2001PhyU...44..104V}
\transl
\jour Phys. Usp.
\yr 2001
\vol 44
\issue 10 suppl.
\pages s104--s108
\crossref{https://doi.org/10.1070/1063-7869/44/10S/S23}
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