Low-frequency suppression of random-telegraph-noise spectra in high-temperature superconductors

V. D. Ashkenazy, G. Jung, I. B. Khalfin, B. Ya Shapiro

Research output: Contribution to journalArticlepeer-review

Abstract

Interaction of the random-telegraph-noise signals with pinned Abrikosov vortices in granular high-temperature superconductors is investigated. It is shown that the low-frequency part of random-noise spectra is suppressed due to interaction of Abrikosov vortices with pinning centers at low magnetic fields and/or due to mutual interactions of vortices in an Abrikosov lattice at high magnetic fields. Values of characteristic frequencies below which spectra are suppressed are evaluated for various experimental configurations including a typical experimental thin-film strip geometry. It is shown that characteristic frequencies and the functional dependence of the low-frequency part of the noise spectra strongly depend on the external magnetic field.

Original languageEnglish
Pages (from-to)1236-1244
Number of pages9
JournalPhysical Review B
Volume51
Issue number2
DOIs
StatePublished - 1995

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