Abstract
We report the measurement of the local Ni spin polarization, not only below but also above the Curie temperature , using the newly developed spin-resolved circularly polarized resonant photoemission technique. The experiment identifies the presence of singlets at high energies and triplets at low energies extending all the way to the Fermi energy, both below and above , showing that it is the orbital degeneracy of the band and the Hund's rule splitting which is of utmost importance to understand Ni and other ferromagnets.
- Received 10 December 1996
DOI:https://doi.org/10.1103/PhysRevLett.79.3510
©1997 American Physical Society