Calculation of interband optical conductivity of Tl/sub 2/CaBa/sub 2/Cu/sub 2/O/sub 8/ and Tl/sub 2/Ca/sub 2/Ba/sub 2/Cu/sub 3/O/sub 10/ superconductors
The interband optical conductivities of Tl/sub 2/CaBa/sub 2/Cu/sub 2/O/sub 8/ and Tl/sub 2/Ca/sub 2/Ba/sub 2/Cu/sub 3/O/sub 10/ superconductors are calculated by using a first-principles method. The results for the two compounds are quite similar, both showing strong anisotropy behavior and a strong momentum matrix effect. The complex dielectric function, the electron energy-loss function, and the reflectivity spectrum are then derived. The values of the static dielectric constant epsilon/sub 0/ and the plasmon frequency ..omega../sub p/ are also obtained. These optical properties are discussed together with similar results for the YBa/sub 2/Cu/sub 3/O/sub 7/ and Bi/sub 2/CaSr/sub 2/Cu/sub 2/O/sub 8/ superconductors. Implications of these results on the possible mechanism in these compounds are discussed.
- Research Organization:
- Department of Physics, University of Missouri: Kansas City, Kansas City, Missouri 64110
- OSTI ID:
- 6339433
- Journal Information:
- J. Opt. Soc. Am. B: Opt. Phys.; (United States), Journal Name: J. Opt. Soc. Am. B: Opt. Phys.; (United States) Vol. 6:3; ISSN JOBPD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BAND THEORY
BARIUM COMPOUNDS
BARIUM OXIDES
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DIELECTRIC PROPERTIES
ELECTRICAL PROPERTIES
OPTICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PLASMONS
QUASI PARTICLES
REFLECTIVITY
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
SURFACE PROPERTIES
THALLIUM COMPOUNDS
THALLIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
TYPE-II SUPERCONDUCTORS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES