Enhancing $T_c$ in ferromagnetic semiconductors

Details Enhancing $T_c$ in ferromagnetic semiconductors Enhancing $T_c$ in ferromagnetic semiconductors

2004-03-01

arxiv.org/abs/cond-mat/0403059v1

Phys. Rev. B 70, 161203(R) (2004)

Physics

Condensed Matter

Materials Science

5 pages with 4 figures

Scientific paper

10.1103/PhysRevB.70.161203

We theoretically investigate disorder effects on the ferromagnetic transition ('Curie') temperature $T_c$ in dilute III$_{1-x}$Mn$_x$V magnetic semiconductors (e.g. Ga$_{1-x}$Mn$_x$As) where a small fraction ($x \approx 0.01-0.1$) of the cation atoms (e.g. Ga) are randomly replaced by the magnetic dopants (e.g. Mn), leading to long-range ferromagnetic ordering for $T

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