Experimental evidence of delocalized states in random dimer superlattices

被引：234

作者：

Bellani, V

Diez, E

Hey, R

Toni, L

Tarricone, L

Parravicini, GB

Domínguez-Adame, F

Gómez-Alcalá, R

机构：

[1] Univ Pavia, INFM, Dipartimento Fis A Volta, I-27100 Pavia, Italy

[2] Univ Carlos III Madrid, Dept Matemat, GISC, E-28911 Leganes, Spain

[3] Paul Drude Inst Festkorperelekt, D-10117 Berlin, Germany

[4] Univ Parma, Dipartimento Fis, INFM, I-43100 Parma, Italy

[5] Univ Complutense Madrid, Dept Fis Mat, GISC, E-20840 Madrid, Spain

[6] Univ Vigo, Dept Technol Comunicac, E-36200 Vigo, Spain

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.82.2159

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the electronic properties of GaAs-AlGaAs superlattices with intentional correlated disorder by means of photoluminescence and vertical de resistance. The results are compared to those obtained in ordered and uncorrelated disordered superlattices. We report the first experimental evidence that spatial correlations inhibit localization of states in disordered low-dimensional systems, as our previous theoretical calculations suggested, in contrast to the earlier belief that all eigenstates are localized.

引用

页码：2159 / 2162

页数：4

共 16 条

[1] OBSERVATION OF CARRIER LOCALIZATION IN INTENTIONALLY DISORDERED GAAS/GAALAS SUPERLATTICES [J].