Statistical aging and nonergodicity in the fluorescence of single nanocrystals

被引：340

作者：

Brokmann, X ^{[1
]}

Hermier, JP

Messin, G

Desbiolles, P

Bouchaud, JP

Dahan, M

机构：

[1] Ecole Normale Super, Unite Rech, Lab Kastler Brossel, F-75231 Paris 05, France

[2] Univ Paris 06, CNRS, Lab Kastler Brossel, F-75231 Paris 05, France

[3] Univ Paris 07, F-75251 Paris 05, France

[4] CEA, Serv Phys Etat Condense, F-91191 Gif Sur Yvette, France

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.90.120601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The relation between single particle and ensemble measurements is addressed for semiconductor CdSe nanocrystals. We record their fluorescence at the single molecule level and analyze their emission intermittency, which is governed by unusual random processes known as Levy statistics. We report the observation of statistical aging and ergodicity breaking, both related to the occurrence of Levy statistics. Our results show that the behavior of ensemble quantities, such as the total fluorescence of an ensemble of nanocrystals, can differ from the time-averaged individual quantities, and must be interpreted with care.

引用

页码：4 / 120601

页数：4

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