Photoexcited polarons in high-temperature superconducting oxides: Structural distortion and low-frequency polarizability. Technical report, 1990-1991
Technical Report
·
OSTI ID:5411232
Photoinduced absorption measurements have been carried out in the infrared spectral range on a series of parent oxides of high temperature superconductors. In all three materials, the observation of infrared active vibrational (IRAV) modes and an associated electronic transition with common intensity and temperature dependence indicate the formation of self-localized polarons as photogenerated carriers. The photoinduced electronic transition deep in the infrared implies a major shift of oscillator strength leading to a large local polarizability in the vicinity of the polaron.
- Research Organization:
- California Univ., Santa Barbara, CA (United States). Inst. for Polymers and Organic Solids
- OSTI ID:
- 5411232
- Report Number(s):
- AD-A-235192/2/XAB; CNN: N00014-83-K-0450
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHALCOGENIDES
CHARGE CARRIERS
COPPER COMPOUNDS
CUPRATES
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
ENERGY-LEVEL TRANSITIONS
EQUIPMENT
HIGH-TC SUPERCONDUCTORS
INFRARED RADIATION
INFRARED SPECTRA
OSCILLATORS
OXIDES
OXYGEN COMPOUNDS
POLARIZATION
POLARONS
QUASI PARTICLES
RADIATIONS
SPECTRA
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHALCOGENIDES
CHARGE CARRIERS
COPPER COMPOUNDS
CUPRATES
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
ENERGY-LEVEL TRANSITIONS
EQUIPMENT
HIGH-TC SUPERCONDUCTORS
INFRARED RADIATION
INFRARED SPECTRA
OSCILLATORS
OXIDES
OXYGEN COMPOUNDS
POLARIZATION
POLARONS
QUASI PARTICLES
RADIATIONS
SPECTRA
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS