INVESTIGADORES
ERRICO Leonardo Antonio
congresos y reuniones científicas
Título:
PAC study of the dynamic hyperfine interactions at 111In-doped Sc2O3 semiconductor and comparison with ab initio calculations
Autor/es:
E. L. MUÑOZ; D. RICHARD; A. W. CARBONARI; L. A: ERRICO; M. RENTERIA
Lugar:
Ginebra, Suiza
Reunión:
Conferencia; 3rd Joint International Conference on Hyperfine Interactions & International Symposium on Nuclear Quadrupole Interaction; 2010
Institución organizadora:
CERN
Resumen:
perturbed-angular-correlation (PAC)
measurements were performed in 111In-difussed Sc2O3
polycrystals in order to characterize the electric-field-gradient (EFG) tensor at
111Cd nuclei located at the two non-equivalent cation sites of the host
lattice. The experimental data were is
compared with ab initio calculations
performed using the Full-Potential Augmented Plane Wave plus local orbital
(FP-APW+lo) method in the framework of the Density Functional Theory (DFT). The
PAC experiments were carried out in air in the temperature range 10 K900 K.
The spectra present a strong damping below 650 K. This damping is associated
with A model based in the population of
impurity levels induced by the Cd probes (in excellent agreement with FP-APW+lo
results) is proposed in order to explain the origin of the observed dynamic
interactions.