| Issue |
Europhys. Lett.
Volume 61, Number 2, January 2003
|
|
|---|---|---|
| Page(s) | 235 - 241 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2003-00224-x | |
| Published online | 01 January 2003 | |
On the nature of ferromagnetism in diluted magnetic
semiconductors: 
1
Departement Natuurkunde, Universiteit Antwerpen (UIA) Universiteitsplein 1, B-2610 Antwerpen, Belgium
2
N. S. Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences - Leninskii prospekt 31 117 907 Moscow, Russia
3
School of Physics and Astronomy, Tel Aviv University Ramat Aviv, 69 978 Tel Aviv, Israel
4
Physics Department, Ben-Gurion University 84 105 Beer-Sheva, Israel
Received:
25
June
2002
Accepted:
29
October
2002
An energy level diagram is constructed on the basis of a
microscopic Hamiltonian proposed for a description of interacting
manganese impurities in diluted magnetic semiconductors (DMS). It
is shown that ferromagnetism in p-type III-V DMS is governed by
the strong hybridization of 
-electrons with the
mobile holes and localized states near the top of the valence
band. The Curie temperature estimated from the proposed
kinematic exchange agrees with the experiments on
. The model is also
applicable to the 
system.
PACS: 71.27.+a – Strongly correlated electron systems; heavy fermions / 75.30.Hx – Magnetic impurity interactions / 75.50.Pp – Magnetic semiconductors
© EDP Sciences, 2003
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