The hierarchy of Mn-Mn exchange mechanisms in Cd1-xMnxTe and related alloys is calculated perturbatively using a generalized Anderson Hamiltonian. Realistic parameters are obtained from experimental band structure information and local spin density ASW calculations. Super-exchange is found to dominate at nearest and next-neighbor distances, in agreement with the observed antiferromagnetic coupling. Calculated Cd1-xMnxTe exchange constants and predicted chemical trends are in good agreement with experiment and with ASW total energy calculations.
|Number of pages||4|
|Journal||Solid State Communications|
|State||Published - Oct 1985|