Effect of the interlayer coupling on nonlinear I-V characteristics in amorphous W/Si nmltilayers

Y. Matsuo, Tsutomu Nojima, Y. Kuwasawa, E. Majkovs, S. Luby

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The current-voltage I-V characteristics of amorphous W monolayers and W/Si multilayers have been measured at different temperatures below Tc in the absence of magnetic field. For the W monolayer, we observed the power law V ∝ I dependence and a sudden increase of ∝ from 1 to 3 at the Kosterlitz-Thouless transition temperature. However, in the W/Si multilayer, the I-V characteristics obey the modified power law V ∝ I(I-Ic)∝-1 with a non-vanishing critical current Ic This result is ascribed to the effect of interlayer coupling between the W layers on the thermal excitations of vortex-antivortex pairs.

Original languageEnglish
Pages (from-to)747-748
Number of pages2
JournalCzechoslovak Journal of Physics
Volume46
Issue numberSUPPL. 2
DOIs
Publication statusPublished - 1996 Dec 1
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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