Observation of an hexatic vortex glass in flux lattices of the high T sub c superconductor Bi sub 2. 1 Sr sub 1. 9 Ca sub 0. 9 Cu sub 2 O sub 8+. delta

Conference · Sat Oct 06 00:00:00 EDT 1990 · AIP Conference Proceedings (American Institute of Physics); (United States)

OSTI ID:7182655

Bishop, D J; Gammel, P L; Murray, C A ^[1]; Mitzi, D B; Kapitulnik, A ^[2]

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1. AT T Bell Laboratories, Murray Hill, New Jersey 07974 (United States)
2. Stanford University, Stanford, California 94305 (United States)

We report observation of hexatic order in Abrikosov flux lattices in very clean crystals of the high {ital T}{sub {ital c}} superconductor Bi{sub 2.1}Sr{sub 1.9}Ca{sub 0.9}Cu{sub 2}O{sub 8+{delta}} (BSCCO). Our experiments consist of {ital in} {ital situ} magnetic decoration of the flux lattice at 4.2 K. Analysis of the decoration images shows that the positional order decays exponentially with a correlation length of a few lattice constants while the orientational order persists for hundreds of lattice constants and decays algebraically with an exponent {eta}{sub 6}=0.06{plus minus}0.01. Our results confirm recent theoretical speculation that the positional order should be far more sensitive to disorder than the orientational order and that the low temperature ordered phase of the flux lines in these systems might be an hexatic glass.

• OSTI ID: 7182655
• Report Number(s): CONF-891248-; CODEN: APCPC
• Journal Information: AIP Conference Proceedings (American Institute of Physics); (United States), Vol. 213:1; Conference: US-USSR conference on frontiers in condensed matter theory, New York, NY (United States), 4-8 Dec 1989; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BISMUTH OXIDES
VORTICES
CALCIUM OXIDES
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
STRONTIUM OXIDES
COHERENCE LENGTH
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
CALCIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
DIMENSIONS
LENGTH
OXIDES
OXYGEN COMPOUNDS
STRONTIUM COMPOUNDS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
665411* - Basic Superconductivity Studies- (1992-)