Extended x-ray-absorption fine-structure studies of electron-lattice correlations in mixed-valence Sm/sub 0. 75/Y/sub 0. 25/S
Journal Article
·
· Phys. Rev. Lett.; (United States)
X-ray absorption spectrum of the Sm L/sub III/ edge has been measured in mixed-valence Sm/sub 0.75/Y/sub 0.25/S. From analysis of the edge structure and extended x-ray absorption fine structure, the valence is determined and it is shown that the S neighbors of each Sm atom adopt an average distance rather than a dynamically distorted environment with two distances corresponding to the two valence states. From this it is concluded that the characteristic Sm 4f-band width is not greatly modified by polaron effects.
- Research Organization:
- Xerox Palo Alto Research Center, Palo Alto, California 94304
- OSTI ID:
- 5280701
- Journal Information:
- Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 44:19; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
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Journal Article
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Fri Sep 15 00:00:00 EDT 1978
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OSTI ID:6935471
Neutron-scattering investigation of the phonons in intermediate-valence Sm/sub 0. 75/Y/sub 0. 25/S
Journal Article
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·
OSTI ID:6012241
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Journal Article
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Sat Mar 31 23:00:00 EST 1990
· Physical Review, B: Condensed Matter; (USA)
·
OSTI ID:6837557
Related Subjects
36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ABSORPTION SPECTRA
BREMSSTRAHLUNG
CHALCOGENIDES
ELECTROMAGNETIC RADIATION
ELECTRON-PHONON COUPLING
FINE STRUCTURE
HAMILTONIANS
IONIZING RADIATIONS
LOW TEMPERATURE
MATHEMATICAL OPERATORS
MEDIUM TEMPERATURE
POLARONS
QUANTUM OPERATORS
QUASI PARTICLES
RADIATIONS
RARE EARTH COMPOUNDS
SAMARIUM COMPOUNDS
SAMARIUM SULFIDES
SPECTRA
SULFIDES
SULFUR COMPOUNDS
SYNCHROTRON RADIATION
TRANSITION ELEMENT COMPOUNDS
VALENCE
X RADIATION
YTTRIUM COMPOUNDS
YTTRIUM SULFIDES
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ABSORPTION SPECTRA
BREMSSTRAHLUNG
CHALCOGENIDES
ELECTROMAGNETIC RADIATION
ELECTRON-PHONON COUPLING
FINE STRUCTURE
HAMILTONIANS
IONIZING RADIATIONS
LOW TEMPERATURE
MATHEMATICAL OPERATORS
MEDIUM TEMPERATURE
POLARONS
QUANTUM OPERATORS
QUASI PARTICLES
RADIATIONS
RARE EARTH COMPOUNDS
SAMARIUM COMPOUNDS
SAMARIUM SULFIDES
SPECTRA
SULFIDES
SULFUR COMPOUNDS
SYNCHROTRON RADIATION
TRANSITION ELEMENT COMPOUNDS
VALENCE
X RADIATION
YTTRIUM COMPOUNDS
YTTRIUM SULFIDES