OPTICAL SPECTROSCOPY OF A 2-DIMENSIONAL ELECTRON-GAS NEAR THE METAL-INSULATOR-TRANSITION

被引：397

作者：

FINKELSTEIN, G

SHTRIKMAN, H

BARJOSEPH, I

机构：

[1] Department of Physics, Weizmann Institute of Science

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.74.976

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on optical measurements of a two-dimensional electron gas near the metal-insulator transition. We observe the appearance of excitons and negatively charged excitons, X-, at the onset of the transition. The fact that these excitons appear at a relatively large average electron density shows that transition is induced by localization of single electrons in the electrostatic potential fluctuations of the remote ionized donors. © 1995 The American Physical Society.

引用

页码：976 / 979

页数：4

共 13 条

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