Ordering in diluted magnetic semiconductors: A magnetic percolation phenomenon (invited)
2007 (English)In: Journal of Applied Physics, ISSN 0021-8979, E-ISSN 1089-7550, Vol. 101, no 9, 09H114- p.Article in journal (Refereed) Published
We report on first principles calculations that describe the electronic structure, magnetic exchange interactions, and ordering temperatures of diluted magnetic semiconductors. The calculated interatomic exchange couplings are used in a Heisenberg Hamiltonian, and ordering temperatures are calculated with the use of Monte Carlo simulations. The accuracy of the method is analyzed by comparing observed and calculated ordering temperatures of several Mn and Cr doped III-V and II-VI semiconductors. The effect of magnetic percolation is discussed along with clustering phenomena and the effect of strong electron-electron interaction.
Place, publisher, year, edition, pages
2007. Vol. 101, no 9, 09H114- p.
magnetic percolation, ordering temperatures, first principles calculations, electron-electron interaction
IdentifiersURN: urn:nbn:se:uu:diva-16324DOI: 10.1063/1.2713220ISI: 000246567900321OAI: oai:DiVA.org:uu-16324DiVA: diva2:44095