Inelastic neutron scattering studies of single crystal TmSe
Inelastic neutron scattering studies have been performed on a single crystal of stoichiometric (a = 5.71 A)TmSe. They confirm previous measurements performed on a polycrystalline sample which showed an inelastic line at h..omega.. approx. = 1 MeV for T < T/sub N/ = 3.0 K. The energy of the 10 MeV line exhibits weak dispersion across the Brillouin zone, while the intensity and linewidth show a stronger q vector dependence. The excitation is broader and less intense near the zone center than at the zone boundary. This feature results from the excitation of f-electrons across the hybridization gap formed when the localized f-electrons hybridize with the conduction band. The temperature and q vector dependences are consistent with a recent theoretical calculation of the neutron cross section for this case.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 6560197
- Report Number(s):
- BNL-28989; CONF-810129-1; TRN: 81-007083
- Resource Relation:
- Conference: Conference on valence fluctuations in solids, Santa Barbara, CA, USA, 27 Jan 1981
- Country of Publication:
- United States
- Language:
- English
Similar Records
Localized Excitation in the Hybridization Gap in YbAl{sub 3}
Inelastic helium-scattering studies of ordered Ar, Kr, and Xe monolayers physisorbed on Ag(111): dispersion curves, scattering cross sections, and excitation lineshapes. Interim technical report
Related Subjects
SELENIDES
NEUTRON DIFFRACTION
THULIUM COMPOUNDS
CROSS SECTIONS
EXPERIMENTAL DATA
INELASTIC SCATTERING
MILLI EV RANGE
MONOCRYSTALS
THERMAL NEUTRONS
BARYONS
CHALCOGENIDES
COHERENT SCATTERING
CRYSTALS
DATA
DIFFRACTION
ELEMENTARY PARTICLES
ENERGY RANGE
EV RANGE
FERMIONS
HADRONS
INFORMATION
NEUTRONS
NUCLEONS
NUMERICAL DATA
RARE EARTH COMPOUNDS
SCATTERING
SELENIUM COMPOUNDS
654003* - Radiation & Shielding Physics- Neutron Interactions with Matter