Single particle excitations in RbAg/sub 4/I/sub 5/
Conference
·
OSTI ID:6297388
In an inelastic neutron experiment on RbAg/sub 4/I/sub 5/ a broad quasielastic peak was observed throughout Q-space. As the temperature was lowered, the quasielastic peak became a broad propagating excitation with dirac constant ..omega.. approx. 2.2 meV. This excitation was measured along several symmetry directions and it exhibited little dispersion. This confirms that the original idea of a single particle excitation corresponding to the Ag/sup +/ ions moving within a potential well created by the rest of the lattice. The temperature dependence of this excitation is consistent with recent calculations of neutron scattering in superionic conductors.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA); Illinois Univ., Urbana (USA)
- DOE Contract Number:
- EY-76-C-02-0016
- OSTI ID:
- 6297388
- Report Number(s):
- BNL-26099; CONF-790538-4
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
360603 -- Materials-- Properties
360605 -- Materials-- Radiation Effects
ALKALI METAL COMPOUNDS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY-LEVEL TRANSITIONS
EXCITATION
HALIDES
HALOGEN COMPOUNDS
INELASTIC SCATTERING
IODIDES
IODINE COMPOUNDS
IONIC CONDUCTIVITY
LATTICE PARAMETERS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RUBIDIUM COMPOUNDS
RUBIDIUM IODIDES
SCATTERING
SILVER COMPOUNDS
SILVER IODIDES
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS
360602* -- Other Materials-- Structure & Phase Studies
360603 -- Materials-- Properties
360605 -- Materials-- Radiation Effects
ALKALI METAL COMPOUNDS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY-LEVEL TRANSITIONS
EXCITATION
HALIDES
HALOGEN COMPOUNDS
INELASTIC SCATTERING
IODIDES
IODINE COMPOUNDS
IONIC CONDUCTIVITY
LATTICE PARAMETERS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RUBIDIUM COMPOUNDS
RUBIDIUM IODIDES
SCATTERING
SILVER COMPOUNDS
SILVER IODIDES
TEMPERATURE DEPENDENCE
TRANSITION ELEMENT COMPOUNDS