Magnons and phonons in Nd/sub 2/CuO/sub 4/
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
Antiferromagnetic magnons Nd/sub 2/CuO/sub 4/, which is the mother material of the electron superconductor (Nd/sub 1/minus//ital x//Ce/sub /ital x//)/sub 2/CuO/sub 4/minus//ital y//, are observed by Raman scattering. The effective exchange integral estimated from the two-magnon peak energy is 1070 cm/sup /minus/1/, which is unexpectedly large in spite of the large Cu-Cu atomic distance compared with those in other superconducting oxides. Lattice vibrations are also investigated. A large two-phonon peak due to the intralayer breathing mode is observed at 1178 cm/sup /minus/1/.
- Research Organization:
- Department of Physics, Faculty of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560, Japan (JP); Department of Physics, Aoyama-Gakuin University, 6-16-1 Chitosedai, Setagaya, Tokyo 157, Japan
- OSTI ID:
- 5947529
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 40:4; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
LATTICE VIBRATIONS
MAGNETIC PROPERTIES
MAGNONS
NEODYMIUM COMPOUNDS
NEODYMIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PHONONS
PHYSICAL PROPERTIES
QUASI PARTICLES
RAMAN SPECTRA
RARE EARTH COMPOUNDS
SPECTRA
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
LATTICE VIBRATIONS
MAGNETIC PROPERTIES
MAGNONS
NEODYMIUM COMPOUNDS
NEODYMIUM OXIDES
OXIDES
OXYGEN COMPOUNDS
PHONONS
PHYSICAL PROPERTIES
QUASI PARTICLES
RAMAN SPECTRA
RARE EARTH COMPOUNDS
SPECTRA
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS