Hydrostatic pressure studies of the Raman-active phonon modes in the bulk high-temperature superconductor YBa[sub 2]Cu[sub 4]O[sub 8]
Conference
·
· AIP Conference Proceedings (American Institute of Physics); (United States)
OSTI ID:7018186
- Department of Physics, University of Missouri-Columbia, Columbia, Missouri 65211 (United States)
- Department of Electrical and Computer Engineering, University of Cincinnati, Mail Location 30, Cincinnati, Ohio 45221-0030 (United States)
The effects of hydrostatic pressure (0--85 kbar) on the Raman-active phonon modes of bulk superconducting YBa[sub 2]Cu[sub 4]O[sub 8] are investigated. This has enabled us to accurately determine and compare the mode Grueneisen parameters for six different phonon modes, including those associated with various vibrations either in the Cu-O planes or in the Cu-O chains. A marked difference can be observed between the behavior of these chain and plane modes. The mode Grueneisen parameters of the phonons present in both the YBa[sub 2]Cu[sub 4]O[sub 8] and the more conventional superconductor YBa[sub 2]Cu[sub 4]O[sub 8] are anomalously different. [copyright] 1994 American Institute of Physics
- DOE Contract Number:
- FG02-89ER45402
- OSTI ID:
- 7018186
- Report Number(s):
- CONF-921145--
- Conference Information:
- Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Journal Volume: 309:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
GRUENEISEN CONSTANT
HIGH-TC SUPERCONDUCTORS
OXIDES
OXYGEN COMPOUNDS
PHONONS
PRESSURE DEPENDENCE
QUASI PARTICLES
RAMAN SPECTRA
SPECTRA
SUPERCONDUCTORS
TEMPERATURE RANGE
TEMPERATURE RANGE 0000-0013 K
TRANSITION ELEMENT COMPOUNDS
VERY HIGH PRESSURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
GRUENEISEN CONSTANT
HIGH-TC SUPERCONDUCTORS
OXIDES
OXYGEN COMPOUNDS
PHONONS
PRESSURE DEPENDENCE
QUASI PARTICLES
RAMAN SPECTRA
SPECTRA
SUPERCONDUCTORS
TEMPERATURE RANGE
TEMPERATURE RANGE 0000-0013 K
TRANSITION ELEMENT COMPOUNDS
VERY HIGH PRESSURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES