Abstract

We present spin-resolved electronic properties of digitally Mn-doped diluted magnetic semiconductor (DMS) quantum wells (QWs) with an emphasis on the control of spontaneous magnetization and spin carrier distributions in terms of QW structure parameters and doping profiles of the magnetic ions. A combined Schrodinger and Poisson equation is solved numerically to obtain self-consistent subband wavefunctions and energies of the holes in the DMS QWs. Self-consistent spin-resolved subband structure shows that (i) the spatial distributions of the majority and minority spin carriers are separated in the DMS QW below the Curie temperature and (ii) the spontaneous magnetization of the Mn-doped magnetic nanostructure depends sensitively on doping profiles of the magnetic ion and the strength of exchange couplings.

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