The band gap of half-metallic ferromagnets can be affected by the spin-orbit coupling, which introduces there a small, but non-vanishing, density of states. We study this effect in the case of Heusler alloys. We find that, as a rule, the spin polarization in the middle of the gap decreases for compounds of heavier elements.
1st International Conference on Nanospintronics Design and Realization (ICNDR 2004), Kyoto, JAPAN, MAY 24-28, 2004
Department of Physics National and Kapodistrian University of Athens University Campus GR-157 84 Zografou, Athens