Ferromagnetism in Mn-doped GaN nanowires.

@article{Wang2005FerromagnetismIM,
  title={Ferromagnetism in Mn-doped GaN nanowires.},
  author={Qian Wang and Qiang Sun and Purusottam Jena},
  journal={Physical review letters},
  year={2005},
  volume={95 16},
  pages={167202}
}
Using density functional theory we show that the magnetic coupling of Mn atoms in the nanowires, unlike that in the thin film, is ferromagnetic. This ferromagnetic coupling, brought about due to the confinement of electrons in the radial direction and the curvature of the Mn-doped GaN nanowires' surface, is mediated by N as is evidenced from the overlap between Mn 3d and N 2p states. Calculations of the anisotropic energy further show that the magnetic moment orients preferably along the [1010… CONTINUE READING
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