Logotipo ImpactU
Autor

PYGMY RESONANCES IN ARTIFICIAL NUCLEI: FAR-INFRARED ABSORPTION BY ELECTRON–HOLE DROPLETS

Acceso Abierto

Abstract:

The structure of E1 resonances has been examined in a microscopic random phase approximation calculation for neutral, symmetric, closed shell and electron–hole systems in a quantum dot. The number of electron–hole pairs, N, is varied from 6 to 42. The occurrence of small, but distinct, E1 peaks in the far-infrared spectra located in the low energy tail of the giant dipole resonance consisting of highly coherent electron–hole excitations is predicted. These pygmy resonances account for about 2% of the dipole energy-weighted photoabsorption sum rule. A very weak dependence of the average pygmy resonance energy on the number of electron–hole pairs is found.

Tópico:

Semiconductor Quantum Structures and Devices

Citaciones:

Citations: 2
2

Citaciones por año:

Altmétricas:

Paperbuzz Score: 0
0

Información de la Fuente:

SCImago Journal & Country Rank
FuenteModern Physics Letters B
Cuartil año de publicaciónNo disponible
Volumen15
Issue02
Páginas81 - 87
pISSNNo disponible
ISSN1793-6640

Enlaces e Identificadores:

Artículo de revista