Itinerant Theory of Exchange Constants in Diluted Co-Based Semimagnetic Semiconductors

• Authors: J. Mašek
• Languages of publication: EN

Abstracts

EN

The exchange constants in diluted semimagnetic semiconductors with Co are much larger than in the Mn doped systems. To explain this, we use a semiquantitative, tight binding version of the coherent potential approach and calculate the electronic structure of II-VI mixed semiconductors containing Co and Mn. The exchange constants are deduced from energies of spin reversal processes. The presence of the Co 3d states at the top of the valence band leads to the observed enhancement of the exchange coupling.

Keywords

EN

75.10.Lp; 75.30.Ef; 75.50.Pp

Discipline

• 75.10.Lp: Band and itinerant models
• 75.50.Pp: Magnetic semiconductors

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1991
• Volume: 80
• Issue: 2
• Pages: 267-270

Dates

published

1991-08

Contributors

author

J. Mašek

• Institute of Physics, Czecho-Slovak Academy of Sciences, Na Slovance 2, 180 40 Prague 8, Czecho-Slovakia

Identifiers

DOI

10.12693/APhysPolA.80.267