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Coercive Field and Magnetization Deficit in Ga(1-x)Mn(x)As Epilayers
S. J. Potashnik, K. C. Ku, S. H. Chun +4
We have studied the field dependence of the magnetization in epilayers of the diluted magnetic semiconductor Ga(1-x)Mn(x)As for 0.0135 < x < 0.083. Measurements of the low temperat…
Highly enhanced Curie temperatures in low temperature annealed (Ga,Mn)As epilayers
K. C. Ku, S. J. Potashnik, R. F. Wang +9
We report Curie temperatures up to 150 K in annealed Ga1-xMnxAs epilayers grown with a relatively low As:Ga beam equivalent pressure ratio. A variety of measurements (magnetization…
Spectroscopic determination of hole density in the ferromagnetic semiconductor GaMnAs
M. J. Seong, S. H. Chun, Hyeonsik M. Cheong +2
The measurement of the hole density in the ferromagnetic semiconductor GaMnAs is notoriously difficult using standard transport techniques due to the dominance of the…
Saturated Ferromagnetism and Magnetization Deficit in Optimally Annealed (Ga,Mn)As Epilayers
S. J. Potashnik, K. C. Ku, R. Mahendiran +4
We examine the Mn concentration dependence of the electronic and magnetic properties of optimally annealed Ga1-xMnxAs epilayers for 1.35% < x < 8.3%. The Curie temperature (Tc), co…