Pressure dependence of the T/sub c/ of YBa/sub 2/Cu/sub 3/O/sub 7/ up to 170 kbar
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
The superconducting onset temperature T/sub co/ of single-phased YBa/sub 2/Cu/sub 3/O/sub 9-//sub delta/ (with deltaapprox. =2) measured resistively in a diamond anvil cell is found to increase at a rate dT/sub co//dp = 0.043 K kbar/sup -1/ up to 170 kbar. This is much weaker than for La-Ba-Cu-O for which dT/sub co//dp = 0.64 K kbar/sup -1/. The pressure dependence of the high-T/sub c/ superconductors measured so far cannot be explained within a standard electron-phonon Bardeen-Cooper-Schrieffer theory. Predictions of resonating-valence bonds and bipolaronic theories are discussed.
- Research Organization:
- Natuurkundig Laboratorium der Vrije Universiteit, Amsterdam, The Netherlands
- OSTI ID:
- 6140699
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 36:10; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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Mon Nov 30 23:00:00 EST 1987
· Phys. Rev. B: Condens. Matter; (United States)
·
OSTI ID:5741040
Pressure dependence of T sub c and charge transfer in YBa sub 2 Cu sub 3 O sub x (6. 35 le x le 7) single crystals
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·
Mon Jul 27 00:00:00 EDT 1992
· Physical Review Letters; (United States)
·
OSTI ID:7293021
Superconductivity under high pressure of YBa sub 2 (Cu sub 1 minus x M x ) sub 3 O sub 7 minus. delta. ( M =Fe, Co, Al, Cr, Ni, and Zn)
Journal Article
·
Tue May 01 00:00:00 EDT 1990
· Physical Review, B: Condensed Matter; (USA)
·
OSTI ID:6883935
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
ELECTRON-PHONON COUPLING
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POLARONS
PRESSURE DEPENDENCE
QUASI PARTICLES
SAMPLE PREPARATION
SUPERCONDUCTORS
TEMPERATURE GRADIENTS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
VERY HIGH PRESSURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
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
ELECTRON-PHONON COUPLING
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POLARONS
PRESSURE DEPENDENCE
QUASI PARTICLES
SAMPLE PREPARATION
SUPERCONDUCTORS
TEMPERATURE GRADIENTS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
VERY HIGH PRESSURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES