Raman spectroscopy of single crystals of high-T/sub c/ cuprates
Journal Article
·
· J. Opt. Soc. Am. B: Opt. Phys.; (United States)
We present normal mode assignments for the Raman spectra of 1--2--3-type materials on the basis of polarized Raman studies of single crystals of Ba/sub 2/YCu/sub 3/O/sub 7/, Ba/sub 2/YCu/sub 3/O/sub 6/, Sr/sub 2/YCu/sub 2.4/Al/sub 0.6/O/sub 7/, and Ba/sub 2-//sub x/La/sub 1+//sub x/Cu/sub 3/O/sub 7+//sub delta/. In Ba/sub 2/YCu/sub 3/O/sub 7/ we observe five intrinsic modes at 500 (O(1) axial stretch), 435 (in-phase O(2), O(3) bend), 335 (out-of-phase O(2), O(3) bend), 140 (Cu(2) axial stretch mode), and 118 cm/sup -1/ (Ba axial mode). Defect-induced modes are found at 600 and 220 cm/sup -1/. A mode at 640 cm/sup -1/, which is seen only in ceramics, is shown to be due to a BaCuO/sub 2/ impurity phase. Furthermore, we discuss the Raman spectra of Bi/sub 2/Sr/sub 2/Ca/sub n//sub -1/Cu/sub n/O/sub 4+2//sub n/ and the high-frequency (..omega..>1000 cm/sup -1/) scattering in Ba/sub 2/YCu/sub 3/O/sub 6/ and Ba/sub 2/YCu/sub 3/O/sub 7/.
- Research Organization:
- ATandT Bell Laboratories, 600 Mountain Avenue, Murray Hill, New Jersey 07974
- OSTI ID:
- 6228664
- 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
Similar Records
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Journal Article
·
Sat Dec 31 23:00:00 EST 1988
· Phys. Rev. B: Condens. Matter; (United States)
·
OSTI ID:6441579
Raman scattering from Ba/sub 2/YCu/sub 3/O/sub 7/ above and below the 90-K superconducting transition: Evidence for oxygen vacancies in the Cu-O chains
Journal Article
·
Sat Aug 01 00:00:00 EDT 1987
· Phys. Rev. B: Condens. Matter; (United States)
·
OSTI ID:6324740
Cu-O vibrations of Ba/sub 2/YCu/sub 3/O/sub x/
Journal Article
·
Wed Jul 01 00:00:00 EDT 1987
· Phys. Rev. B: Condens. Matter; (United States)
·
OSTI ID:5923245
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
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BARIUM COMPOUNDS
BARIUM OXIDES
CERAMICS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
CRYSTALS
ENERGY LEVELS
EXCITED STATES
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MONOCRYSTALS
NORMAL-MODE ANALYSIS
OXIDES
OXYGEN COMPOUNDS
POLARIZATION
RAMAN SPECTRA
RARE EARTH COMPOUNDS
SPECTRA
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TYPE-II SUPERCONDUCTORS
VIBRATIONAL STATES
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
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BARIUM COMPOUNDS
BARIUM OXIDES
CERAMICS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
CRYSTALS
ENERGY LEVELS
EXCITED STATES
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MONOCRYSTALS
NORMAL-MODE ANALYSIS
OXIDES
OXYGEN COMPOUNDS
POLARIZATION
RAMAN SPECTRA
RARE EARTH COMPOUNDS
SPECTRA
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TYPE-II SUPERCONDUCTORS
VIBRATIONAL STATES
YTTRIUM COMPOUNDS
YTTRIUM OXIDES