Far-infrared conductivity of the high-T/sub c/ superconductor YBa/sub 2/Cu/sub 3/O/sub 7/

Journal Article · Mon May 25 00:00:00 EDT 1987 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.58.2249· OSTI ID:6511340

Bonn, D A; Greedan, J E; Stager, C V; Timusk, T; Doss, M G; Herr, S L; Kamaras, K; Tanner, D B

We present reflectance data for the high-temperature superconductor YBa/sub 2/Cu/sub 3/O/sub 7/, and the Kramers-Kronig transformed conductivity from 50 to 900 cm/sup -1/. There is a rich phonon structure with peaks at 151, 191, 279, 310, 548, and 609 cm/sup -1/. The continuous background is Drude type at high temperature but below the superconducting transition there is a region of suppressed conductivity consistent with a superconducting gap with the weak-coupling BCS value. Also associated with superconductivity are changes to the low-lying phonons and a plasma-type edge at 60 cm/sup -1/.

• Research Organization: Institute of Materials Research, McMaster University, Hamilton, Ontario L8S 4M1, Canada
• OSTI ID: 6511340
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 58:21; ISSN PRLTA
• 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
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
INFRARED RADIATION
LOW TEMPERATURE
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
OPTICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PELLETS
PHONONS
PHYSICAL PROPERTIES
QUASI PARTICLES
RADIATIONS
REFLECTIVITY
SUPERCONDUCTIVITY
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES