Abstract
Interfacial magnetic coupling in a bilayer of Mn on Fe(001) has been determined using the all-electron local density full potential linearized augmented plane wave method. Strikingly, the magnetic properties are very sensitive to the atomic structure, namely, the multilayer relaxation and the lattice constant in the lateral plane. The magnetic moment of the surface Mn appears to favor an antiferromagnetic coupling with the underlying Fe substrate, which explains some unusual experimental results. Since magnetic moments in the two Mn layers are very different (-2.76 μB for Mn(S) versus 1.09 μB for Mn(I)), a detectable net X-ray magnetic circular dichroism (MCD) signal is predicted for the antiferromagnetic Mn bilayer.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 89-93 |
| Number of pages | 5 |
| Journal | Journal of Magnetism and Magnetic Materials |
| Volume | 161 |
| DOIs | |
| State | Published - Aug 1996 |
Funding
This work was supported by the Office of Naval Research (grant No. N00014-95-1-0489) and by a grant of computer time at the Pittsburgh Supercomputing Center through the NSF Division of Advanced Scientific Computing. We thank G. Prinz for suggesting this investigation and for stimulating discussions. One of us (A.J.F.) thanks S.D. Bader for handling the editorial aspects of processing this paper, including the anonymous refereeing.
Keywords
- MCD spectrum
- Magnetic moment
- Magnetic ordering
- Surface multilayer relaxation
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics