Diffusion theory of spin injection through resistive contacts

Theory of electrical spin injection: Tunnel contacts as a solution of the conductivity mismatch problem

Quantum Theory of Spin Diffusion

It has been recognized that the notion of spin diffusion due to the exchange-type interaction between spins is very useful to describe a number of experiments on the nuclear spin relaxation in a crystal containing paramagnetic impurities/l and on the critical scattering of neutrons by a ferromagnet. 2l It has been assumed there that the z-component of the magnetization density, A1°(R), would ob...

Spin injection through an FeÕInAs interface

M. Zwierzycki,* K. Xia, P. J. Kelly, G. E. W. Bauer, and I. Turek Faculty of Applied Physics and MESA 1 Research Institute, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands Department of Applied Physics and DIMES, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands Institute of Physics of Materials, Academy of Sciences of the Czech Republic, CZ-616 ...

Bias dependence of spin injection into GaAs from Fe, FeCo, and (Ga,Mn)As contacts

Spin injection from Fe(001) and (Ga,Mn)As(001) into n-GaAs(001) was investigated using a method which provides two-dimensional cross-sectional images of the spin polarization in GaAs. While the distribution of the spin polarization below the injecting contact is nearly uniform for (Ga,Mn)As, a strong confinement near the contact edge is observed for Fe and FeCo. The spin polarization in GaAs ch...

Spin injection in a semiconductor through a space-charge layer

http://dx.doi.org/10.1016/j.sse.2014.06.035 0038-1101/ 2014 Elsevier Ltd. All rights reserved. ⇑ Corresponding author. Tel.: +43 15880136060. E-mail addresses: [email protected] (J. Ghosh), [email protected]. at (T. Windbacher), [email protected] (V. Sverdlov), [email protected]. ac.at (S. Selberherr). Joydeep Ghosh ⇑, Thomas Windbacher, Viktor Sverdlov, Siegfried Selber...