Abstract
We have carried out an ultrahigh-field cyclotron resonance study of n-type films, with Mn composition x ranging from 0% to 12%, grown on GaAs by low-temperature molecular-beam epitaxy. We observe that the electron cyclotron resonance peak shifts to lower field with increasing x. A detailed comparison of experimental results with calculations based on a modified Pidgeon-Brown model allows us to estimate the and exchange-coupling constants, and for this important III-V dilute magnetic semiconductor system.
- Received 3 July 2002
DOI:https://doi.org/10.1103/PhysRevB.66.161307
©2002 American Physical Society