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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