Checkerboard pattern of the interlayer coupling between two Co films across Fe/Cu and Cu/Co/Cu spacer layers grown on Cu(100)
Abstract
Quantum well (QW) states and oscillatory interlayer coupling in Co/Cu/Fe/Co/Cu ( 001 ) are investigated by angular resolved photoemission spectroscopy and x-ray magnetic linear dichroism. We find that the QW states in Cu/Fe/Co/Cu ( 001 ) depend very little on the magnetic state of the fcc Fe films. The interlayer coupling between the Co films across the Cu/Fe spacer layer displays a checkerboard pattern in Fe-Cu thickness plane. The presence of the fcc Fe ferromagnetic live layer at the Cu/Fe interface is shown to be responsible for the checkerboard pattern, which was confirmed by experiments on Co/Cu/Co/Cu/Co/Cu ( 100 ) system.
- Publication:
-
Physical Review B
- Pub Date:
- June 2004
- DOI:
- 10.1103/PhysRevB.69.214410
- Bibcode:
- 2004PhRvB..69u4410W
- Keywords:
-
- 75.75.+a;
- Magnetic properties of nanostructures