Abstract
We prove that the magnetic ground state of a single monolayer Fe on W(001) is antiferromagnetic, i.e., a checkerboard arrangement of antiparallel magnetic moments. Real space images of this magnetic structure have been obtained with spin-polarized scanning tunneling microscopy. An out-of-plane easy magnetization axis is concluded from measurements in an external magnetic field. The magnetic ground state and anisotropy axis are explained based on first-principles calculations.
- Received 13 August 2004
DOI:https://doi.org/10.1103/PhysRevLett.94.087204
©2005 American Physical Society