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

Conference:

Abstract

We report observation of hexatic order in Abrikosov flus lattices in very clean crystals of the high-Tc 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 in 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}=0.6{+-}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. (orig.).
Authors:
Bishop, D J; Gammel, P L; Murray, C A; [1]  Mitzi, D B; Kapitulnik, A [2] 
  1. AT and T Bell Labs., Murray Hill, NJ (USA)
  2. Stanford Univ., CA (USA)
Publication Date:
Feb 01, 1991
Product Type:
Conference
Report Number:
CONF-900806-
Reference Number:
AIX-22-079107; EDB-91-157219
Resource Relation:
Journal Name: Physica B. Condensed Matter; (Netherlands); Journal Volume: 169:pt.3; Conference: 19. international conference on low temperature physics, Brighton (United Kingdom), 16-22 Aug 1990
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; HIGH-TC SUPERCONDUCTORS; MAGNETIC FLUX; VORTICES; ABRIKOSOV THEORY; BISMUTH OXIDES; CALCIUM OXIDES; COPPER OXIDES; GLASS; LATTICE PARAMETERS; MAGNETIC FIELDS; MELTING; SCANNING ELECTRON MICROSCOPY; STRONTIUM OXIDES; TEMPERATURE DEPENDENCE; ULTRALOW TEMPERATURE; ALKALINE EARTH METAL COMPOUNDS; BISMUTH COMPOUNDS; CALCIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; ELECTRON MICROSCOPY; MICROSCOPY; OXIDES; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; STRONTIUM COMPOUNDS; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; 656100* - Condensed Matter Physics- Superconductivity; 360204 - Ceramics, Cermets, & Refractories- Physical Properties
OSTI ID:
5126866
Country of Origin:
Netherlands
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0921-4526; CODEN: PHYBE
Submitting Site:
NLN
Size:
Pages: 72-79
Announcement Date:

Conference:

Citation Formats

Bishop, D J, Gammel, P L, Murray, C A, Mitzi, D B, and Kapitulnik, A. Observation of an hexatic vortex glass in flux lattices of the high-Tc superconductor Bi sub 2. 1 Sr sub 1. 9 Ca sub 0. 9 Cu sub 2 O sub 8+. delta. Netherlands: N. p., 1991. Web.
Bishop, D J, Gammel, P L, Murray, C A, Mitzi, D B, & Kapitulnik, A. Observation of an hexatic vortex glass in flux lattices of the high-Tc superconductor Bi sub 2. 1 Sr sub 1. 9 Ca sub 0. 9 Cu sub 2 O sub 8+. delta. Netherlands.
Bishop, D J, Gammel, P L, Murray, C A, Mitzi, D B, and Kapitulnik, A. 1991. "Observation of an hexatic vortex glass in flux lattices of the high-Tc superconductor Bi sub 2. 1 Sr sub 1. 9 Ca sub 0. 9 Cu sub 2 O sub 8+. delta." Netherlands.
@misc{etde_5126866,
title = {Observation of an hexatic vortex glass in flux lattices of the high-Tc superconductor Bi sub 2. 1 Sr sub 1. 9 Ca sub 0. 9 Cu sub 2 O sub 8+. delta}
author = {Bishop, D J, Gammel, P L, Murray, C A, Mitzi, D B, and Kapitulnik, A}
abstractNote = {We report observation of hexatic order in Abrikosov flus lattices in very clean crystals of the high-Tc 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 in 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}=0.6{+-}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. (orig.).}
journal = {Physica B. Condensed Matter; (Netherlands)}
volume = {169:pt.3}
place = {Netherlands}
year = {1991}
month = {Feb}
}