Observation of an oxygen isotope shift in the superconducting transition temperature of La/sub 1. 85/Sr/sub 0. 15/CuO/sub 4/

Journal Article · Mon Aug 24 04:00:00 EDT 1987 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.59.915· OSTI ID:6254644

Faltens, T A; Ham, W K; Keller, S W; Leary, K J; Michaels, J N; Stacy, A M; zur Loye, H; Morris, D E; Barbee, III, T W; Bourne, L C; others, and

An oxygen isotope shift is observed in superconducting La/sub 1.85/Sr/sub 0.15/CuO/sub 4/ when /sup 18/O is substituted partially for /sup 16/O; the superconducting transition temperature T/sub c/ is lowered by 0.3 to 1.0 K in different samples. We examine these results using conventioanl phonon-mediated BCS theory and conclude that, for La/sub 1.85/Sr/sub 0.15/CuO/sub 4/, phonons play an important role in the pairing mechanism.

• Research Organization: College of Chemistry, University of California and Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory, Berkeley, California 94720
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6254644
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 59:8; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BCS THEORY
COPPER COMPOUNDS
EVEN-EVEN NUCLEI
ISOTOPES
ISOTOPIC EXCHANGE
LANTHANUM COMPOUNDS
LIGHT NUCLEI
NUCLEI
OXYGEN 16
OXYGEN 18
OXYGEN COMPOUNDS
OXYGEN ISOTOPES
PHONONS
PHYSICAL PROPERTIES
QUASI PARTICLES
RARE EARTH COMPOUNDS
STABLE ISOTOPES
STRONTIUM COMPOUNDS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE