Nonequilibrium Vortex Melting in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{ital {delta}}} Crystals

Journal Article · Sat Feb 01 04:00:00 EST 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.78.1118· OSTI ID:489574

Keener, C; Trawick, M; Ammirata, S; Hebboul, S; Garland, J ^[1]

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1. Department of Physics, The Ohio State University, Columbus, Ohio 43210 (United States)

We present evidence for nonequilibrium two stage melting in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}}. Samples cooled in low applied magnetic fields display a sharp hysteretic drop of the resistance which is associated with a first-order vortex lattice freezing transition. Using an eight-terminal geometry, we have measured a second sharp feature in the liquid phase which suggests thermal interlayer decoupling of vortex lines. The melting transition temperature decreases with increasing current, however, indicating that these measurements were made under nonequilibrium conditions. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 489574
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 6 Vol. 78; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH OXIDES
CALCIUM OXIDES
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
MAGNETIC FLUX
MELTING
STRONTIUM OXIDES
TEMPERATURE DEPENDENCE
TRANSITION TEMPERATURE
flux-line lattice