We present a detailed analysis of the relativistic electronic structure and the momentum dependent spin-polarization of the Tl/Si(111) surface. Our first principle calculations reveal the existence of fully spin-polarized electron pockets associated to the huge spin-splitting of metallic surface bands. The calculated spin-polarization shows a very complex structure in the reciprocal space, strongly departing from simple theoretical model approximations. Interestingly, the electronic spin-state close to the Fermi surface is polarized along the surface perpendicular direction and reverses its orientation between different electron pockets.
@article{arxiv.1306.6840,
title = {Relativistic effects and fully spin-polarized Fermi surface at the Tl/Si(111) surface},
author = {Julen Ibañez-Azpiroz and Asier Eiguren and Aitor Bergara},
journal= {arXiv preprint arXiv:1306.6840},
year = {2013}
}