Phonon Raman scattering of NbBa sub 2 Cu sub 3 O sub y and Nd sub 1. 6 Ba sub 1. 4 Cu sub 3 O sub y
Journal Article
·
· Physical Review, B: Condensed Matter; (USA)
- Superconductivity Research Laboratory, International Superconductivity Technical Center, Tokyo 135, Japan (JP)
Polarized Raman scattering from NdBa{sub 2}Cu{sub 3}O{sub {ital y}} and Nd{sub 1.6}Ba{sub 1.4}Cu{sub 3}O{sub {ital y}} single crystals is reported. Single-phonon peaks have been observed in NdBa{sub 2}Cu{sub 3}O{sub {ital y}} at 136, 168, 316, 448, 508, and 580 cm{sup {minus}1} at room temperature where the 316- and 580-cm{sup {minus}1} peaks are strong in the ({ital x},{ital x}) while the 448- and 508-cm{sup {minus}1} peaks are strong in the ({ital z},{ital z}) configurations. The 316-cm{sup {minus}1} peak is found to separate into two peaks at 290 and 323 cm{sup {minus}1} at 4 K, which are assigned as in-phase and out-of-phase vibration of oxygen atoms in the Cu-O plane, respectively. The polarization dependence of the scattering peaks has been explained on the basis of the characteristics of the electronic transitions. The energy shift of peaks when Ba is substituted by Nd has also been discussed.
- OSTI ID:
- 6846785
- Journal Information:
- Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:16; ISSN 0163-1829; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:6226224
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· Physical Review, B: Condensed Matter
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Related Subjects
656003 -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
AMBIENT TEMPERATURE
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRON-PHONON COUPLING
HIGH-TC SUPERCONDUCTORS
NEODYMIUM COMPOUNDS
NEODYMIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PHONONS
POLARIZATION
QUASI PARTICLES
RAMAN SPECTRA
RARE EARTH COMPOUNDS
SPECTRA
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TYPE-II SUPERCONDUCTORS
656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
AMBIENT TEMPERATURE
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRON-PHONON COUPLING
HIGH-TC SUPERCONDUCTORS
NEODYMIUM COMPOUNDS
NEODYMIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PHONONS
POLARIZATION
QUASI PARTICLES
RAMAN SPECTRA
RARE EARTH COMPOUNDS
SPECTRA
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TYPE-II SUPERCONDUCTORS