Revealing Antiferromagnetic Order of the Fe Monolayer on W(001): Spin-Polarized Scanning Tunneling Microscopy and First-Principles Calculations
Abstract
We prove that the magnetic ground state of a single monolayer Fe on W(001) is c(2×2) 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.
- Publication:
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Physical Review Letters
- Pub Date:
- March 2005
- DOI:
- Bibcode:
- 2005PhRvL..94h7204K
- Keywords:
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- 75.70.Ak;
- 68.37.Ef;
- 71.15.Mb;
- Magnetic properties of monolayers and thin films;
- Scanning tunneling microscopy;
- Density functional theory local density approximation gradient and other corrections