329 citations · 1.3k across the 9 of their papers we have counts for
8 papers
Fabrication and Characterization of Modulation-Doped ZnSe/(Zn,Cd)Se (110) Quantum Wells: A New System for Spin Coherence Studies
K. C. Ku, S. H. Chun. W. H. Wang, W. Fadgen +4
We describe the growth of modulation-doped ZnSe/(Zn,Cd)Se quantum wells on (110) GaAs substrates. Unlike the well-known protocol for the epitaxy of ZnSe-based quantum structures on…
Point Contact Spin Spectroscopy of Ferromagnetic MnAs Epitaxial Films
R. Panguluri, G. Tsoi, B. Nadgorny +3
We use point contact Andreev reflection spin spectroscopy to measure the transport spin polarization of MnAs epitaxial films grown on (001) GaAs. By analyzing both the temperature…
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…
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…