Low-frequency suppression of random-telegraph-noise spectra in high-temperature superconductors
- Department of Physics, Bar-Ilan University, 52100, Ramat Gan (Israel)
- Department of Physics, Ben Gurion University of the Negev, 84105 Beer-Sheva (Israel) Instytut Fizuki, Polish Academy of Sciences, 02668 Warszawa (Poland)
- Jack and Pearl Resnik Institute of Advanced Technology, Bar-Ilan University, 52100, Ramat Gan (Israel) Department of Physics, Bar-Ilan University, 52100, Ramat Gan (Israel)
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.
- OSTI ID:
- 6701492
- Journal Information:
- Physical Review, B: Condensed Matter; (United States), Vol. 51:2; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
HIGH-TC SUPERCONDUCTORS
NOISE
CUPRATES
GRANULAR MATERIALS
JOSEPHSON JUNCTIONS
MAGNETIC FLUX
SUPERCONDUCTING FILMS
VORTICES
COPPER COMPOUNDS
FILMS
JUNCTIONS
MATERIALS
OXYGEN COMPOUNDS
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
665411* - Basic Superconductivity Studies- (1992-)