First Principles Calculations of Fe on GaAs (100)

We have calculated from first principles the electronic structure of 0.5 monolayer upto 5 monolayer thick Fe layers on top of a GaAs (100) surface. We find the Fe magnetic moment to be determined by the Fe-As distance. As segregates to the top of the Fe film, whereas Ga most likely is found within t...

Full description

Saved in:
Bibliographic Details
Main Authors Mirbt, S, Sanyal, B, Isheden, C, Johansson, B
Format Journal Article
LanguageEnglish
Published 29.01.2003
Subjects
Physics - Materials Science
Online AccessGet full text

Cover

More Information
Summary:We have calculated from first principles the electronic structure of 0.5 monolayer upto 5 monolayer thick Fe layers on top of a GaAs (100) surface. We find the Fe magnetic moment to be determined by the Fe-As distance. As segregates to the top of the Fe film, whereas Ga most likely is found within the Fe film. Moreover, we find an asymmetric in-plane contraction of our unit-cell along with an expansion perpendicular to the surface. We predict the number of Fe 3d-holes to increase with increasing Fe thickness on $p$-doped GaAs.
DOI:10.48550/arxiv.cond-mat/0301563