STARK-LADDER TRANSITIONS AND THEIR OSCILLATOR-STRENGTHS IN GAAS/ALAS SUPERLATTICES

被引：13

作者：

KAWASHIMA, K ^{[1
]}

YAMAMOTO, T ^{[1
]}

KOBAYASHI, K ^{[1
]}

FUJIWARA, K ^{[1
]}

机构：

[1] KYUSHU INST TECHNOL,DEPT ELECT ENGN,TOBATA KU,KITAKYUSHU 804,JAPAN

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 15期

关键词：

D O I：

10.1103/PhysRevB.47.9921

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have studied Stark-ladder transitions and their oscillator strengths in GaAs/AlAs superlattices with different miniband widths 2DELTA by low-temperature photocurrent spectroscopy. The measured intensity ratio as a function of an electric field F of the nth-order Stark-ladder transition normalized by the zeroth-order transition shows a clear F-2n dependence in the limit of high field. A DELTA2 dependence of the measured intensity ratio on the miniband width is also obtained. These results support the tight-binding theory of Bleuse, Bastard, and Voisin [Phys. Rev. Lett. 60, 220 (1988)].

引用

页码：9921 / 9924

页数：4

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