ELECTRON CORRELATION-EFFECTS IN THE LOW-COVERAGE REGIME OF METALS DEPOSITED ON GAAS(110)

被引：17

作者：

FLORES, F

ORTEGA, J

机构：

来源：

EUROPHYSICS LETTERS | 1992年 / 17卷 / 07期

关键词：

ELECTRON STATES IN LOW-DIMENSIONAL STRUCTURES; SURFACE DOUBLE LAYERS; SCHOTTKY BARRIERS; WORK FUNCTIONS;

D O I：

10.1209/0295-5075/17/7/008

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Electron correlation effects in the 2-dimensional band created upon the low-coverage deposition of alkali metals on GaAs(110) are analysed by means of many-body techniques. Our results show high correlation effects for low coverages, with the 2-dimensional band showing a Kondo-like peak at the Fermi energy. We argue that this peak is responsible for the Fermi level pinning for low metal coverages. Our results explain the conflicting evidences collected with different experiments.

引用

页码：619 / 624

页数：6

共 28 条

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