Resistive transitions in ultrathin superconducting films: Possible evidence for quantum tunneling of vortices

Y. Liu, D. B. Haviland, L. I. Glazman, A. M. Goldman

Research output: Contribution to journalArticlepeer-review

61 Scopus citations

Abstract

Unusual temperature dependence of electrical resistance has been observed in ultrathin superconducting films of Pb, Al, and Bi. In small magnetic fields, at low temperatures, sheet resistances varied with temperature as RR0 exp(T/T0), where T0 and R0 are constants. This result is not expected in conventional models of vortex motion involving thermal activation. On the other hand, it may be explained in a quantum tunneling picture.

Original languageEnglish (US)
Pages (from-to)2224-2227
Number of pages4
JournalPhysical review letters
Volume68
Issue number14
DOIs
StatePublished - 1992

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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