Superconducting energy gap of BaPb/sub 1-//sub x/Bi/sub x/O/sub 3/

Journal Article · Tue Nov 01 00:00:00 EST 1988 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.38.9284· OSTI ID:6725927

Schlesinger, Z; Collins, R T; Scott, B A; Calise, J A

We report the first infrared measurement of the superconducting energy gap of BaPb/sub 1-//sub x/Bi/sub x/O/sub 3/. In our polycrystalline samples with T/sub c/approx. =9.5 K (xapprox. =0.2) we obtain 2..delta..approx. =3.2kT/sub c/, roughly in agreement with the weak-coupling Bardeen-Cooper-Schrieffer prediction, 2..delta.. = 3.5kT/sub c/, and with tunneling measurements of the gap. We do not observe any structure above the gap energy associated with strong coupling.

• Research Organization: IBM Research Division, Thomas J. Watson Research Center, P.O. Box 218, Yorktown Heights, New York 10598
• OSTI ID: 6725927
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Vol. 38:13
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BARIUM OXIDES
ENERGY GAP
BISMUTH OXIDES
LEAD OXIDES
BCS THEORY
COUPLING
FAR INFRARED RADIATION
PHONONS
SPECTRAL REFLECTANCE
SUPERCONDUCTIVITY
UMKLAPP PROCESSES
VIBRATIONAL STATES
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BASIC INTERACTIONS
BISMUTH COMPOUNDS
CHALCOGENIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROMAGNETIC INTERACTIONS
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
EXCITED STATES
INFRARED RADIATION
INTERACTIONS
LEAD COMPOUNDS
OPTICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
QUASI PARTICLES
RADIATIONS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
656100 - Condensed Matter Physics- Superconductivity