Exchange coupling and Mn valency in GaN doped with Mn and co-doped with Mg

Mostefa Djermouni, Ali Zaoui, Roland Hayn +1

We study 1 or 2 neighboring Mn impurities, as well as complexes of 1 Mn and 1 or 2 Mg ions in a 64 atoms supercell of GaN by means of density functional calculations. Taking into a…