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

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

2002-07-02

arxiv.org/abs/cond-mat/0207082v1

Phys. Rev. B Vol. 66, 161307(R) (2002).

Physics

Condensed Matter

Materials Science

4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.66.161307

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.

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