Evidence for a depinning transition in the vortex quasilattice of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}}

Journal Article · Sat Nov 01 04:00:00 EST 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.56.10832· OSTI ID:544908

Dewhurst, C D; Doyle, R A ^[1]

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1. Interdisciplinary Research Centre in Superconductivity, University of Cambridge, Cambridge CB3 OHE (United Kingdom)

Magnetization measurements have been performed on several crystals of Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} as a function of both temperature and magnetic field. A pinning crossover for vortices is identified at fields above the arrowhead second peak transition but below the irreversibility line in agreement with recent Hall-array measurements. In addition, a small but clear feature is apparent in the derivative of the magnetic moment as a function of temperature at fields below that of the arrowhead at an almost field-independent temperature of about 32 K. These features define a pinning-related transition that crosses continuously from the disordered into the ordered vortex solid phase. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 544908
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 17 Vol. 56; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH OXIDES
CALCIUM OXIDES
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
MAGNETIC FIELDS
MAGNETIC FLUX
MAGNETIC MOMENTS
MAGNETIZATION
STRONTIUM OXIDES
VORTICES