Ultrahigh field electron cyclotron resonance absorption in In${}_{1-x}$Mn${}_x$As films

Abstract

We have carried out an ultrahigh field cyclotron resonance study of $n$-type In${}_{1-x}$Mn${}_x$As 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 {\em s-d} and {\em p-d} exchange coupling constants, $\alpha$ and $\beta$, for this important III-V dilute magnetic semiconductor system.

4 pages, 4 figures

References in corpus (1)

• Electronic structure of In${}_{1-x}$Mn${}_x$As studied by photoemission spectroscopy: Comparison with Ga${}_{1-x}$Mn${}_x$As

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