Trends in Ferromagnetism in Mn doped dilute III-V alloys from a density functional perspective

Details Trends in Ferromagnetism in Mn doped dilute III-V alloys from a density functional perspective Trends in Ferromagnetism in Mn doped dilute III-V alloys from a density functional perspective

2009-05-12

arxiv.org/abs/0905.1762v1

Physics

Condensed Matter

Materials Science

12 pages, 3 figures, Accepted in Physical Review B

Scientific paper

Mn doping in dilute III-V alloys has been examined as a route to enhance ferromagnetic stability. Strong valence band bowing is expected at the dilute limit, implying a strong modification of the ferromagnetic stability upon alloying, with even an increase in some cases. Using first principle electronic structure calculations we show that while codoping with a group V anion enhances the ferromagnetic stability in some cases when the effects of relaxation of the lattice are not considered, strong impurity scattering in the relaxed structure result in a reduction of the ferromagnetic stability.

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