MINIBAND AND WANNIER-STARK STATES IN GAAS-ALAS SUPERLATTICES INVESTIGATED BY DIFFERENTIAL PHOTOCURRENT SPECTROSCOPY

被引：9

作者：

SCHMIDT, KH

DINTINO, A

LINDER, N

TUNA, M

DOHLER, GH

GRAHN, HT

KAWASHIMA, K

FUJIWARA, K

机构：

[1] MAX PLANCK INST FESTKORPERFORSCH,W-7000 STUTTGART 80,GERMANY

[2] ATR OPT & RADIO COMMUN RES LAB,SEIKA,KYOTO 61902,JAPAN

来源：

SUPERLATTICES AND MICROSTRUCTURES | 1992年 / 12卷 / 02期

关键词：

D O I：

10.1016/0749-6036(92)90333-Z

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We used a new modulation technique, the wavelength modulated photocurrent spectroscopy, to study the field dependent transition from the miniband to the Wannier-Stark regime in GaAsAlAs-superlattices. In the zero field limit the edges of the joint miniband density of states between electrons and heavy as well as light holes create characteristic features in our modulated spectra. Applying small electric fields bulk-like Franz-Keldysh-Oscillations appear at the lower and upper miniband edges. At large electric fields the well known Wannier-Stark-Levels are observable. © 1992.

引用

页码：181 / 190

页数：10

共 10 条

[1] QUANTUM COHERENCE IN SEMICONDUCTOR SUPERLATTICES [J].