Telegraph-like noise in Y-Ba-Cu oxide thin-film dc SQUID's
Journal Article
·
· Appl. Phys. Lett.; (United States)
We have observed a telegraph-like noise in dc superconducting quantum interference devices (SQUID's) made of low-temperature synthesized superconducting Y-Ba-Cu oxide thin films. The voltage of the SQUID jumps among two to four discrete levels randomly with time, and exhibits a Lorentzian type frequency dependence in the power spectrum. Periodic modulations of the voltage with magnetic flux are observed in a SQUID having narrow bridges of submicrometer width. The flux noise of the SQUID is dominated by the telegraph-like noise at low frequencies.
- Research Organization:
- Research Institute of Applied Electricity, Hokkaido University, Sapporo 060, Japan
- OSTI ID:
- 7030176
- Journal Information:
- Appl. Phys. Lett.; (United States), Journal Name: Appl. Phys. Lett.; (United States) Vol. 53:7; ISSN APPLA
- Country of Publication:
- United States
- Language:
- English
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·
OSTI ID:5191922
Related Subjects
36 MATERIALS SCIENCE
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
420201* -- Engineering-- Cryogenic Equipment & Devices
656100 -- Condensed Matter Physics-- Superconductivity
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRONIC EQUIPMENT
EQUIPMENT
FABRICATION
FILMS
FLUXMETERS
MAGNETIC FLUX
MEASURING INSTRUMENTS
MICROWAVE EQUIPMENT
NOISE
OXIDES
OXYGEN COMPOUNDS
PEROVSKITES
SPUTTERING
SQUID DEVICES
SUPERCONDUCTING DEVICES
SUPERCONDUCTING FILMS
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
USES
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
420201* -- Engineering-- Cryogenic Equipment & Devices
656100 -- Condensed Matter Physics-- Superconductivity
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRONIC EQUIPMENT
EQUIPMENT
FABRICATION
FILMS
FLUXMETERS
MAGNETIC FLUX
MEASURING INSTRUMENTS
MICROWAVE EQUIPMENT
NOISE
OXIDES
OXYGEN COMPOUNDS
PEROVSKITES
SPUTTERING
SQUID DEVICES
SUPERCONDUCTING DEVICES
SUPERCONDUCTING FILMS
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
USES
YTTRIUM COMPOUNDS
YTTRIUM OXIDES