THE ELECTRONIC-PROPERTIES OF THE MINIBAND AND THE EFFECT OF EXTERNAL ELECTRIC-FIELDS IN SUPERLATTICES

被引：2

作者：

FONG, CY ^{[1
]}

GALLUP, RF ^{[1
]}

ESAKI, L ^{[1
]}

CHANG, LL ^{[1
]}

机构：

[1] IBM CORP,THOMAS J WATSON RES CTR,YORKTOWN HTS,NY 10598

来源：

SUPERLATTICES AND MICROSTRUCTURES | 1990年 / 7卷 / 02期

关键词：

D O I：

10.1016/0749-6036(90)90128-T

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The properties of the lowest-energy miniband in a square-well model superlattice and the electronic properties of this superlattice under an external electric field are studied by simple variational calculations within the concept of the supercell. The calculated width of the miniband (2.4meV) agrees well with the value measured for a GaAs/AlAs superlattice having similar parameters (2meV). For weak fields, the results suggest coherent electron conduction over a few superlattice periods between scattering events, a conclusion which is consistent with experimental results. For strong fields, the formation of Stark ladders is illustrated. © 1990.

引用

页码：147 / 151

页数：5

共 10 条

[1] BLUE SHIFT OF THE ABSORPTION-EDGE IN ALGAINAS-GAINAS SUPERLATTICES - PROPOSAL FOR AN ORIGINAL ELECTRO-OPTICAL MODULATOR [J].