PACS: 72.15.Gd; 72.20.My; 73.61.Ga

Ferromagnetism induced in diluted A1-xMnxB semiconductors
V.P. Bryksa1, G.G. Tarasov2, W.T. Masselink2, W. Nolting2, Yu.I. Mazur3, G.J. Salamo3

1V. Lashkaryov Institute of Semiconductor Physics, NAS of Ukraine, 41, Prospect Nauki, 03028 Kyiv, Ukraine
2Humboldt Universitat zu Berlin, Institut fur Physik, Newtonstrasse 15, 2489 Berlin, Germany
3Department of Physics, University of Arkansas, Fayetteville, Arkansas 7270

Abstract. Theoretical model has been developed for analysis of the peculiarities of new type of magnetism in diluted magnetic A1-xMnxB semiconductors. The coherent potential is introduced using the dynamic mean field theory (DMFT) approximation and the Baym- Kadanoff hypothesis valid for the case x < xc (xc is the percolation limit).

Keywords: diluted magnetic semiconductors, ferromagnetism, coherent potential, exchange interaction.
Paper received 05.03.04; accepted for publication 30.03.04.

Download full text in PDF  [PDF 606K]