Thermodynamic and other properties of La/sub 1. 85/Sr/sub 0. 15/CuO/sub 4/
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
We have calculated the thermodynamic, electromagnetic, and critical-field properties of superconducting La/sub 1.85/Sr/sub 0.15/CuO/sub 4/, using the electron-phonon spectral density determined recently by Weber, from band-structure calculations. Even though the electron-phonon mass enhancement is lambda = 2.6 the predicted dimensionless ratios are not very different from those of Pb. For example, the normalized specific-heat jump at T/sub c/, ..delta..C/..gamma..(0)T/sub c/ = 2.8, the ratio of twice the energy gap to T/sub c/, 2..delta../sub 0//k/sub B/T/sub c/ = 5.3 and ..gamma..(0)T/sub c//sup 2//H/sub c//sup 2/(0) = 0.124 where H/sub c/(0) is the zero-temperature (T) thermodynamic critical field. The reduced upper critical field h/sub c//sub 2/(0) at T = 0 in the dirty limit equals 0.76 and shows little Pauli limiting in calculations with H/sub c//sub 2/(0)approx. =43 T.
- Research Organization:
- Physics Department, McMaster University, Hamilton, Ontario, Canada L8S 4M1
- OSTI ID:
- 6254775
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 36:7; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Upper critical fields and high superconducting transition temperatures of La/sub 1. 85/Sr/sub 0. 15/CuO/sub 4/ and La/sub 1. 85/Ba/sub 0. 15/CuO/sub 4/
Specific heat of the high T/sub c/ superconductors (La,M)/sub 2/CuO/sub 4/ and YBa/sub 2/Cu/sub 3/O/sub 7/ in magnetic fields. [M = Ca,Sr]
Journal Article
·
Thu Oct 01 00:00:00 EDT 1987
· Phys. Rev. B: Condens. Matter; (United States)
·
OSTI ID:6269377
Upper critical fields and high superconducting transition temperatures of La/sub 1. 85/Sr/sub 0. 15/CuO/sub 4/ and La/sub 1. 85/Ba/sub 0. 15/CuO/sub 4/
Journal Article
·
Sun Mar 01 23:00:00 EST 1987
· Appl. Phys. Lett.; (United States)
·
OSTI ID:6973293
Specific heat of the high T/sub c/ superconductors (La,M)/sub 2/CuO/sub 4/ and YBa/sub 2/Cu/sub 3/O/sub 7/ in magnetic fields. [M = Ca,Sr]
Conference
·
Sat Aug 01 00:00:00 EDT 1987
·
OSTI ID:6197986
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
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL FIELD
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON-PHONON COUPLING
ENERGY
ENERGY GAP
ENERGY-LEVEL DENSITY
FREE ENERGY
FUNCTIONS
GORKOV-ELIASHBERG THEORY
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MAGNETIC FIELDS
OXIDES
OXYGEN COMPOUNDS
PENETRATION DEPTH
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SPECIFIC HEAT
SPECTRAL DENSITY
SPECTRAL FUNCTIONS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL FIELD
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON-PHONON COUPLING
ENERGY
ENERGY GAP
ENERGY-LEVEL DENSITY
FREE ENERGY
FUNCTIONS
GORKOV-ELIASHBERG THEORY
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MAGNETIC FIELDS
OXIDES
OXYGEN COMPOUNDS
PENETRATION DEPTH
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SPECIFIC HEAT
SPECTRAL DENSITY
SPECTRAL FUNCTIONS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTIVITY
SUPERCONDUCTORS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS