Evidence for three-dimensional flux creep in thin-film Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}}
- Department of Physics and Center for Advanced Materials Research, Oregon State University, Corvallis, Oregon 97331-6507 (United States)
We have measured sweep-rate-dependent magnetization hysteresis curves of thin-film Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} using a Hall probe magnetometer in an unconventional geometry. We find a structure in the response well below the three-dimensional to two-dimensional crossover field. The observed strong enhancement of the perpendicular field component`s creep rate in the presence of an in-plane applied magnetic field is in contrast to recent findings. We attribute this to the existence of a finite correlation length between vortex pancakes along the field direction larger than the interlayer spacing leading to a three-dimensional behavior of flux lines in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} at 77 K.
- OSTI ID:
- 83952
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 5 Vol. 52; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BISMUTH OXIDES
CALCIUM OXIDES
CHEMISORPTION
CORRELATIONS
CRITICAL CURRENT
CUPRATES
ENERGY LOSSES
HIGH-TC SUPERCONDUCTORS
HYSTERESIS
MAGNETIC FLUX
MAGNETIZATION
SORPTIVE PROPERTIES
STRONTIUM OXIDES
STRONTIUM TITANATES
SUPERCONDUCTING FILMS
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0065-0273 K