4 papers
External control of the direction of magnetization in ferromagnetic InMnAs/GaSb heterostructures
X. Liu, W. L. Lim, L. V. Titova +10
In this paper, we demonstrate external control over the magnetization direction in ferromagnetic (FM) In_{1-x}Mn_{x}As/GaSb heterostructures. FM ordering with T_C as high as 50 K i…
Capping-induced suppression of annealing in Ga(1-x)Mn(x)As epilayers
M. B. Stone, K. C. Ku, S. J. Potashnik +3
We have studied the effects of capping ferromagnetic Ga(1-x)Mn(x)As epilayers with a thin layer of undoped GaAs, and we find that even a few monolayers of GaAs have a significant e…
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…