174 citations · 369 across the 4 of their papers we have counts for
6 papers · 1 filter
Non-diffusive spin dynamics in a two-dimensional electron gas
C. P. Weber, J. Orenstein, B. Andrei Bernevig +3
We describe measurements of spin dynamics in the two-dimensional electron gas in GaAs/GaAlAs quantum wells. Optical techniques, including transient spin-grating spectroscopy, are u…
Mechanical control of spin-orbit splitting in GaAs and InGaAs epilayers
V. Sih, H. Knotz, J. Stephens +3
Time-resolved Kerr rotation spectroscopy as a function of pump-probe distance, voltage and magnetic field is used to measure the momentum-dependent spin splitting energies in GaAs…
Observation of spin Coulomb drag in a two-dimensional electron gas
C. P. Weber, N. Gedik, J. E. Moore +3
An electron propagating through a solid carries spin angular momentum in addition to its mass and charge. Of late there has been considerable interest in developing electronic devi…
Optically-patterned nuclear doughnuts in GaAs/MnAs heterostructures
J. Stephens, J. Berezovsky, R. K. Kawakami +2
We demonstrate a scheme for optically patterning nuclear spin polarization in semiconductor/ferromagnet heterostructures. A scanning time-resolved Kerr rotation microscope is used…
Voltage control of nuclear spin in ferromagnetic Schottky diodes
R. J. Epstein, J. Stephens, M. Hanson +4
We employ optical pump-probe spectroscopy to investigate the voltage dependence of spontaneous electron and nuclear spin polarizations in hybrid MnAs/n-GaAs and Fe/n-GaAs Schottky…
Spatial Imaging of Magnetically Patterned Nuclear Spins in GaAs
J. Stephens, R. K. Kawakami, J. Berezovsky +4
We exploit ferromagnetic imprinting to create complex laterally defined regions of nuclear spin polarization in lithographically patterned MnAs/GaAs epilayers grown by molecular be…