Room-temperature ferromagnetism in Mn-doped semiconducting CdGeP2.

  title={Room-temperature ferromagnetism in Mn-doped semiconducting CdGeP2.},
  author={Priya Mahadevan and Alex Zunger},
  journal={Physical review letters},
  volume={88 4},
The chalcopyrite CdGeP2 doped with Mn have been recently found to exhibit room-temperature ferromagnetism. Isovalent substitution of the Cd site is expected, however, to create antiferromagnetism, in analogy with the well-known CdTe:Mn (d5) case. However, chalcopyrite semiconductors exhibit low-energy intrinsic defects. We show theoretically how ferromagnetism results from the interaction of Mn with hole-producing intrinsic defects. 

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