Single particle excitations in RbAg/sub 4/I/sub 5/

Conference · Mon Jan 01 00:00:00 EST 1979

OSTI ID:6297388

Shapiro, S M; Salamon, M B

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; TRN: 79-013877
• Resource Relation: Conference: Fast ion transport in solids-electrode and electrolytes conference, Lake Geneva, WI, USA, 21 May 1979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
RUBIDIUM IODIDES
EXCITATION
SILVER IODIDES
INELASTIC SCATTERING
IONIC CONDUCTIVITY
LATTICE PARAMETERS
PHASE TRANSFORMATIONS
TEMPERATURE DEPENDENCE
ALKALI METAL COMPOUNDS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY-LEVEL TRANSITIONS
HALIDES
HALOGEN COMPOUNDS
IODIDES
IODINE COMPOUNDS
PHYSICAL PROPERTIES
RUBIDIUM COMPOUNDS
SCATTERING
SILVER COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360602* - Other Materials- Structure & Phase Studies
360603 - Materials- Properties
360605 - Materials- Radiation Effects