Spin tunneling in junctions with disordered ferromagnets
Materials Science
2009-11-13 v1
Abstract
We provide compelling evidence to establish that, contrary to one's elementary guess, the tunneling spin polarization (TSP) of amorphous CoFeB is larger than that of highly textured fcc CoFeB. First principles atomic and electronic structure calculations reveal striking agreement between the measured TSP and the predicted s-electron spin polarization. Given the disordered structure of the ternary alloy, not only do these results strongly endorse our communal understanding of tunneling through AlOx, but they also portray the key concepts that demand primary consideration in such complex systems.
Cite
@article{arxiv.0712.2722,
title = {Spin tunneling in junctions with disordered ferromagnets},
author = {P. V. Paluskar and J. J. Attema and G. A. de Wijs and S. Fiddy and E. Snoeck and J. T. Kohlhepp and H. J. M. Swagten and R. A. de Groot and B. Koopmans},
journal= {arXiv preprint arXiv:0712.2722},
year = {2009}
}
Comments
To be published in Physical Review Letters. 5 double-column pages with 3 figures