| Issue |
Europhys. Lett.
Volume 40, Number 6, December II 1997
|
|
|---|---|---|
| Page(s) | 667 - 672 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1997-00520-y | |
| Published online | 01 September 2002 | |
Spin response of unpolarized quantum dots
1
Departament de Física, Universitat de les Illes Balears
E-07071 Palma de Mallorca, Spain
2
Departament d'Estructura i Contituents de la Matèria
Universitat de Barcelona - E-08028 Barcelona, Spain
Received:
23
April
1997
Accepted:
24
October
1997
The spin response function for electrons confined in a quantum dot
is studied within the time-dependent local spin density approximation
(TDLSDA) of density functional theory. In the long-wavelength regime
we predict the existence of a low-energy collective dipole (
)
spin mode. The evolution with electron number of the spin response is
studied and compared with that of the density response.
Predictions for the static dipole polarizability are given.
PACS: 73.20.Dx – Electron states in low-dimensional structures (superlattices, quantum well structures and multilayers) / 78.20.Bh – Theory, models, and numerical simulation
© EDP Sciences, 1997
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