A method is proposed that allows for a more precise evaluation of the spin splitting of electronic levels induced by the exchange interaction between effective-mass electrons and localized magnetic moments in dilute magnetic semiconductors. The method is nonperturbative, surpasses the molecular-field approximation (MFA), and is developed in the spirit of the muffin-tin model. Surprisingly, the corrections to the MFA exhibit a strong variation with the concentration of magnetic ions, accounting for the hitherto unexplained dependence of the apparent p-d exchange integral on x in ${\mathrm{Cd}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Mn}}_{\mathit{x}}$S.
▪ Abstract We review the rapid progress made in our understanding of the crystal properties of semiconductors and nanocrystals focussing on theoretical results obtained within t...
Self-consistent calculations are presented for the electronic structure of $3d$, $4d$, and some $\mathrm{sp}$ impurities in Cu. The calculations are based on density-functional ...
A definition of key quantities of the Kohn-Sham form of density-functional theory such as the exchange-correlation potential ${v}_{\mathrm{xc}}$ and the energy density ${\ensure...
The aim of this paper is to advocate the usefulness of the spin-density-functional (SDF) formalism. The generalization of the Hohenberg-Kohn-Sham scheme to and SDF formalism is ...
It has been verified by means of the polarization microscope that rochelle salt in the ferroelectric state consists of many domains. The domain structure in an annealed crystal ...
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