Anisotropic optical properties of YBa sub 2 Cu sub 3 O sub 7
- Research Department, Naval Air Warfare Center Weapons Division, China Lake, California 93555-6001 (United States)
Based upon the published results of YBa{sub 2}Cu{sub 3}O{sub 7} single-crystal reflectance spectra measured at room temperature, the empirical anisotropic spectral density functions and quasidielectric functions {epsilon}{sub 1{ital j}}+{ital i}{epsilon}{sub 2{ital j}} ({ital j}={ital a},{ital b},{ital c}) are determined in the 0.05 to 6 eV spectral range. These functions are an excellent fit to the reflectance spectra of samples in single-crystal, twin-crystal, and polycrystalline forms; they agree well with the published anisotropic transport and ellipsometry data. For polarizations along the {ital a} and {ital b} axes, the numerically determined empirical spectral density functions have shown two interband absorption peaks at 2.5 and 5 eV. For energy above 3 eV, the spectral density functions do not agree with the published theoretical interband conductivities that are derived from the band structure calculations.
- OSTI ID:
- 7110936
- Journal Information:
- Journal of Applied Physics; (United States), Vol. 71:12; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
Similar Records
Electronic structure of YBa{sub 2}Cu{sub 3}O{sub 7-x}
Far-infrared absorptivity of the superconducting state of YBa[sub 2]Cu[sub 3]O[sub 7-[delta]] crystals
Related Subjects
BARIUM OXIDES
OPTICAL PROPERTIES
COPPER OXIDES
YTTRIUM OXIDES
ABSORPTION
HIGH-TC SUPERCONDUCTORS
REFLECTION
SPECTRAL DENSITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
FUNCTIONS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SORPTION
SPECTRAL FUNCTIONS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties