EVIDENCE FOR A STABLE EXCITONIC GROUND-STATE IN A SPATIALLY SEPARATED ELECTRON-HOLE SYSTEM

被引：97

作者：

CHENG, JP

KONO, J

MCCOMBE, BD

LO, I

MITCHEL, WC

STUTZ, CE

机构：

[1] SUNY BUFFALO,DEPT PHYS,BUFFALO,NY 14260

[2] USAF,WRIGHT LAB,MLPO,WRIGHT PATTERSON AFB,OH 45433

[3] USAF,WRIGHT LAB,ELRA,WRIGHT PATTERSON AFB,OH 45433

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.74.450

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Far-infrared magnetospectroscopy on InAs/AlxGa1-xSb quantum-well structures has revealed new transitions (X lines) when sufficient holes (in AlxGa1-xSb) coexist with electrons (in InAs) and the magnetic field is high enough. The electron-related X line is about 3 meV above electron cyclotron resonance, has roughly the same slope vs magnetic field, and increases in intensity with increasing hole density or decreasing temperature. This line is assigned to an internal excitonic transition and provides evidence for the existence of an excitonic ground state. © 1995 The American Physical Society.

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页码：450 / 453

页数：4

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