Vortex Lattice Structure in Bi{sub {bold 2}}Sr{sub {bold 2}}CaCu{sub {bold 2}}O{sub {bold 8+{delta}}} at High Temperatures

Journal Article · Sun Dec 01 00:00:00 EST 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.77.5118· OSTI ID:404083

Kim, P; Yao, Z; Lieber, C M ^[1]

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1. Division of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138 (United States)

The microscopic structure of the magnetic flux-line lattice (FLL) in Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8+{delta}} superconductors was studied at temperatures up to 77K by decoration. Comparison of FLLs obtained at 55 and 4.2K shows that twisted bond defects are a manifestation of thermal fluctuations at elevated temperature. Analyses of the orientational and translational correlation functions for field and zero-field cooled lattices obtained at 55K suggest that the observed FLL is an equilibrium hexatic. These data were also used to estimate the FLL freezing temperature. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 404083
• Journal Information: Physical Review Letters, Vol. 77, Issue 25; Other Information: PBD: Dec 1996
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
HIGH-TC SUPERCONDUCTORS
MAGNETIC FLUX
VORTICES
BISMUTH OXIDES
STRONTIUM OXIDES
CALCIUM OXIDES
COPPER OXIDES
TEMPERATURE DEPENDENCE
ELECTRON MICROSCOPY
CRYSTAL DEFECTS
SEM
FLUX-LINE LATTICES