61 citations · 91 across the 5 of their papers we have counts for
5 papers
Spin injection and detection up to room temperature in Heusler~alloy/-GaAs spin valves
T. A. Peterson, S. J. Patel, C. C. Geppert +7
We have measured the spin injection efficiency and spin lifetime in CoFeSi/-GaAs lateral nonlocal spin valves from 20 to 300 K. We observe large (40 V) spin valve s…
Dynamic detection of electron spin accumulation in ferromagnet-semiconductor devices by ferromagnetic resonance
Changjiang Liu, Sahil J. Patel, Timothy A. Peterson +4
A distinguishing feature of spin accumulation in ferromagnet-semiconductor devices is precession of the non-equilibrium spin population of the semiconductor in a magnetic field. Th…
Electrical detection of ferromagnetic resonance in ferromagnet/n-GaAs heterostructures by tunneling anisotropic magnetoresistance
Changjiang Liu, Yakov Boyko, Chad Geppert +5
We observe a dc voltage peak at ferromagnetic resonance (FMR) in samples consisting of a single ferromagnetic (FM) layer grown epitaxially on the GaAs (001) surface. T…
Knight shift and nuclear spin relaxation in Fe/n-GaAs heterostructures
Kevin D. Christie, Chad C. Geppert, Sahil J. Patel +3
We investigate the dynamically polarized nuclear-spin system in Fe/\emph{n}-GaAs heterostructures using the response of the electron-spin system to nuclear magnetic resonance (NMR)…
Electromotive Force Generated by Spin Accumulation in FM/-GaAs Heterostructures
Chad C. Geppert, Lee R. Wienkes, Kevin D. Christie +3
We report on a method of quantifying spin accumulation in CoMnSi/-GaAs and Fe/-GaAs heterostructures using a non-magnetic probe. In the presence of a large non-equilibr…