FAR-INFRARED EMISSION-SPECTROSCOPY OF HOT 2-DIMENSIONAL PLASMONS IN AL0.3GA0.7AS/GAAS HETEROJUNCTIONS

被引：90

作者：

HIRAKAWA, K ^{[1
]}

YAMANAKA, K ^{[1
]}

GRAYSON, M ^{[1
]}

TSUI, DC ^{[1
]}

机构：

[1] PRINCETON UNIV,DEPT ELECT ENGN,PRINCETON,NJ 08544

来源：

APPLIED PHYSICS LETTERS | 1995年 / 67卷 / 16期

关键词：

D O I：

10.1063/1.114333

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have investigated the radiative decay of hot two-dimensional (2D) plasmons in Al0.3Ga0.7As/GaAs heterostructures by far-infrared emission spectroscopy and determined the spectral line shape of the radiation. Narrowband plasmon emission lines an obtained in the terahertz regime. The experimentally observed energies of plasmon emission are in good agreement with the results of a recently developed full grating theory. The plasmon emission intensity is found to increase with increasing input electrical power to the electron system and follows the Bose-Einstein distribution law characterized by the electron temperature of the hot 2D electron system. This fact indicates that 2D plasmons are thermally excited in the present experimental regime. (C) 1995 American Institute of Physics.

引用

页码：2326 / 2328

页数：3

共 12 条

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