Berlin 2005 – scientific programme
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MA: Magnetismus
MA 22: Magnetische dünne Schichten IV
MA 22.5: Talk
Tuesday, March 8, 2005, 11:30–11:45, TU H1012
Ultrathin antiferromagnetic films on a ferromagnetic substrate: A first-principles study of Mn on Fe(001) — •J. Henk1, A. Ernst1, P. Bruno1, and R. K. Thapa2 — 1MPI für Mikrostrukturphysik, Halle/S., Germany — 2Pachhunga University College, Mizoram University, India
The electronic and magnetic structures of Mn films with thicknesses of up to 12 monolayer on Fe(001) is investigated by means of first-principles calculations, with a focus on the thicker films. The Mn films show a layer-by-layer antiferromagnetic structure and couple antiferromagnetically to the Fe substrate. The magnetic moments at the Mn surface and at the Mn-Fe interface are significantly enhanced, as compared to the respective bulk values. Several surface states are found at the center of the two-dimensional Brillouin zone, some of which might explain recent experimental scanning-tunneling-spectroscopy results [1].
[1] T. K. Yamada, M. M. J. Bischoff, G. M. M. Heijnen, T. Mizoguchi, and H. van Kempen, Phys. Rev. Lett. (2003) 90 056803.