2003 Volume 72 Issue 5 Pages 587-591
Spin−resolved surface images and surface nanoscale structures can be observed simultaneously by spin−polarized scanning tunneling spectroscopy using a ferromagnetic tip. By means of this technique, a magnetic image of the ultrathin Cr(001) film epitaxially grown on a Au(001) surface was observed at room temperature. The Cr(001) film examined shows the topological (layered) antiferromagnetic order in spite of there being a high screw dislocation density. A narrow domain wall width (about 10 nm) induced by screw dislocations was observed. On the Fe(001) surfaces, we observed an electronic state that may be related to the scattering of the spin−polarized surface state electrons at the atomic steps.
