Spin response of unpolarized quantum dots

被引：289

作者：

Serra, L ^{[1
]}

Lipparini, E

机构：

[1] Univ Illes Balears, Dept Fis, E-07071 Palma de Mallorca, Spain

[2] Univ Barcelona, Dept Estructura & Constituents Mat, E-08028 Barcelona, Spain

[3] Univ Trento, Dipartimento Fis, Povo, Trento, Italy

来源：

EUROPHYSICS LETTERS | 1997年 / 40卷 / 06期

关键词：

D O I：

10.1209/epl/i1997-00520-y

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 (l = 1) 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.

引用

页码：667 / 672

页数：6

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