Superconductivity and the low-temperature orthorhombic to tetragonal phase transition in La[sub 2[minus][ital x]]Ba[sub [ital x]]CuO[sub 4]

Journal Article · Mon Sep 20 00:00:00 EDT 1993 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.71.1903· OSTI ID:6220111

Billinge, S J.L.; Kwei, G H; Lawson, A C; Thompson, J D ^[1]; Takagi, H ^[2]

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1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
2. Department of Applied Physics, University of Tokyo, Yayoi 2 11 16, Bunkyo-ku, Tokyo 113 (Japan)

The relationship between the low temperature orthorhombic-tetragonal (OT) phase transition in La[sub 2[minus][ital x]]Ba[sub [ital x]]CuO[sub 4] and the suppression of the superconducting state in samples with [ital x]=0.125 has been investigated. Using high resolution synchrotron x-ray diffraction we show that the phase composition of a superconducting [ital x]=0.15 sample varies with temperature identically to an [ital x]=0.125 sample. This shows that the tetragonal structure [ital does] support bulk superconductivity in La[sub 2[minus][ital x]]Ba[sub [ital x]]CuO[sub 4] and the electronic transition which suppresses superconductivity at [ital x]=0.125 is distinct from the OT structural transition.

• OSTI ID: 6220111
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 71:12; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
665100 -- Nuclear Techniques in Condensed Matter Physics -- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BREMSSTRAHLUNG
CHALCOGENIDES
CHEMICAL COMPOSITION
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
HIGH-TC SUPERCONDUCTORS
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RADIATIONS
RARE EARTH COMPOUNDS
SCATTERING
SUPERCONDUCTIVITY
SUPERCONDUCTORS
SYNCHROTRON RADIATION
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION