329 citations · 1.1k across the 10 of their papers we have counts for
11 papers
Laser remote magnetometry using mesospheric sodium
Thomas J. Kane, Paul D. Hillman, Craig A. Denman +4
We have demonstrated a remote magnetometer based on sodium atoms in the Earth's mesosphere, at a 106-kilometer distance from our instrument. A 1.33-watt laser illuminated the atoms…
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…
Spin-polarized Tunneling in Hybrid Metal-Semiconductor Magnetic Tunnel Junctions
S. H. Chun, S. J. Potashnik, K. C. Ku +2
We demonstrate efficient spin-polarized tunneling between a ferromagnetic metal and a ferromagnetic semiconductor with highly mismatched conductivities. This is indicated by a larg…