Vollmer R, Etzkorn M, Kumar P S Anil, Ibach H, Kirschner J
Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany.
Phys Rev Lett. 2003 Oct 3;91(14):147201. doi: 10.1103/PhysRevLett.91.147201. Epub 2003 Sep 29.
The realm of high energy, large wave vector spin waves in ultrathin films and at surfaces is unexplored because a suitable method was not available up to now. We present experimental data for an 8 ML thick Co film deposited on Cu(001) which show that spin-polarized electron energy loss spectroscopy can be used to measure spin-wave dispersion curves of ultrathin ferromagnetic films up to the surface Brillouin zone boundary.
