Bulk superconductivity at 36 K in La/sub 1. 8/Sr/sub 0. 2/CuO/sub 4/

Journal Article · Mon Jan 26 00:00:00 EST 1987 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.58.408· OSTI ID:6878029

Cava, R J; van Dover, R B; Batlogg, B; Rietman, E A

We report the results of resistivity and magnetic susceptibility measurements in La/sub 2-//sub x/Sr/sub x/CuO/sub 4/ for xless than or equal to0.3. The x = 0.2 sample shows a superconducting transition at 36.2 K with a width of 1.4 K. The associated dc diamagnetic susceptibility (Meissner effect) is a large fraction (60%--70%) of the ideal value. We estimate the density of states from critical-field and resistivity data and suggest, by analogy to BaPb/sub 1-//sub x/Bi/sub x/O/sub 3/, that conventional phonon-mediated superconductivity can account for the high T/sub c/ in this class of materials.

• Research Organization: AT&T Bell Labs., Murray Hill, NJ (United States)
• OSTI ID: 6878029
• Journal Information: Phys. Rev. Lett.; (United States), Vol. 58:4
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COPPER COMPOUNDS
MEISSNER-OCHSENFELD EFFECT
SUPERCONDUCTIVITY
LANTHANUM COMPOUNDS
OXYGEN COMPOUNDS
STRONTIUM COMPOUNDS
DIAMAGNETISM
ELECTRIC CONDUCTIVITY
EXPERIMENTAL DATA
MAGNETIC SUSCEPTIBILITY
PHONONS
VERY LOW TEMPERATURE
ALKALINE EARTH METAL COMPOUNDS
DATA
ELECTRICAL PROPERTIES
INFORMATION
MAGNETIC PROPERTIES
MAGNETISM
NUMERICAL DATA
PHYSICAL PROPERTIES
QUASI PARTICLES
RARE EARTH COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
656100 - Condensed Matter Physics- Superconductivity