Local optical spectroscopy in quantum confined systems: A theoretical description

被引：56

作者：

Mauritz, O

Goldoni, G

Rossi, F

Molinari, E

机构：

[1] Univ Modena, Ist Nazl Fis Mat, I-41100 Modena, Italy

[2] Univ Modena, Dipartimento Fis, I-41100 Modena, Italy

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.82.847

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A theoretical description of local absorption is proposed in order to investigate spectral variations on a length scale comparable with the extension of the relevant quantum states. A general formulation, including Coulomb correlation, is derived within the density-matrix formalism and applied to the prototypical case of coupled quantum wires. The results show that excitonic effects may have a crucial impact on the local absorption, with implications for the spatial resolution and the interpretation of near-field optical spectra.

引用

收藏

页码：847 / 850

页数：4

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