Evidence for three-dimensional flux creep in thin-film Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}}

Journal Article · Tue Aug 01 04:00:00 EDT 1995 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.52.3776· OSTI ID:83952

Karapetrov, G; Tate, J ^[1]

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1. 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

Related Subjects

66 PHYSICS
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