Abstract
The effective gyromagnetic factor of electrons, , has been determined by Zeeman splitting measurements in a large number of samples. Upon incorporation, shows first a sign reversal with respect to that of GaAs, then increases abruptly for a nitrogen concentration of order of 0.04%, and finally displays a nonmonotonic dependence on composition for higher values. This behavior is well reproduced by a modified model taking into account a nonmonotonic loss of character of the conduction band minimum due to multiple crossings between the redshifting conduction band edge and -cluster states.
- Received 22 May 2006
DOI:https://doi.org/10.1103/PhysRevB.74.245202
©2006 American Physical Society