Noise in the microwave absorption of YBa/sub 2/Cu/sub 3/O/sub 7-//sub delta/
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
Low-temperature microwave absorption measurements at 9.3 GHz in ceramic YBa/sub 2/Cu/sub 3/O/sub 7-//sub delta/ were made on the broad modulated signal observed after maximum flux had been trapped. Noise occurred on the extrema of this signal if the modulation frequency and amplitude were sufficiently high and the temperature was close to the lowest that could be attained when the limiting factor was the microwave heating of the sample. The source of the noise is proposed to be thermal instabilities, which produce small flux avalanches in the superconducting grains.
- Research Organization:
- Department of Physics, Montana State University, Bozeman, Montana 59717
- OSTI ID:
- 6441801
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 39:4; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTRA
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTROMAGNETIC RADIATION
FINE STRUCTURE
MICROWAVE RADIATION
NOISE
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
SPECTRA
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
ULTRALOW TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTRA
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTROMAGNETIC RADIATION
FINE STRUCTURE
MICROWAVE RADIATION
NOISE
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
SPECTRA
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
ULTRALOW TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES