Phenomenological theory for copper oxide high- T sub c superconductors

Journal Article · Fri Sep 01 04:00:00 EDT 1989 · Physical Review (Section) B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.40.4427· OSTI ID:5650508

Eab, C H ^[1]; Tang, I M ^[2]

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1. Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 5, Thailand (TH)
2. Department of Physics, Faculty of Science, Mahidol University, Bangkok 4, Thailand

A phenomenological Ginzburg-Landau model for the newly discovered high-{ital T}{sub {ital c}} superconducting series Tl{sub {ital m}}Ba{sub 2}Ca{sub {ital n}{minus}1}Cu{sub {ital n}}O{sub 2{ital n}+{ital m}+2} ({ital m}=1,2) and Bi{sub 2}Sr{sub 2}Ca{sub {ital n}{minus}1}Cu{sub {ital n}}O{sub 2{ital n}+4} is formulated. It is assumed that the order parameters in adjacent CuO layers are coupled through a simple Josephson-effect-like tunneling. By minimizing the free energy, expressions for the transition temperatures of the {ital n}-layer superconductors are obtained. Using the published {ital T}{sub {ital c}}'s of the first members of each series, the {ital T}{sub {ital c}}'s of the higher members are obtained and are in good agreement with the experimental values.

• OSTI ID: 5650508
• Journal Information: Physical Review (Section) B: Condensed Matter; (USA), Journal Name: Physical Review (Section) B: Condensed Matter; (USA) Vol. 40:7; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
GINZBURG-LANDAU THEORY
LAYERS
ORDER PARAMETERS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
THALLIUM COMPOUNDS
THALLIUM OXIDES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE