Dresden 2003 – wissenschaftliches Programm
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MA: Magnetismus
MA 12: Oberfl
ächenmagnetismus
MA 12.3: Vortrag
Dienstag, 25. März 2003, 10:45–11:00, HSZ/401
Manganese induced magnetic interface states in the c(2×2) phases of Mn/Cu(001) and Mn/Au(001) — •Frederik Schiller1, Samed V. Halilov2, and Clemens Laubschat1 — 1Institut für Oberflächenphysik und Mikrostrukturphysik, TU Dresden — 2Center for Computational Materials Science, Naval Research Laboratory, Washington, DC 20375 and DMSE, University of Pennsylvania, Philadelphia, PA 19104, USA
The electronic structures and the Fermi surfaces of the c(2×2) surface compounds of Mn deposited on Cu(001) and Au(001) are compared on the basis of angle-resolved photoemission data. The different structure [1] is also reflected in the magnetic and electronic properties of the system. While Mn atoms on Cu(001) were found in a high-spin ground state, observed Mn 3p core-level shifts indicate different behaviour on Au(001). In the electronic structure of both compounds new Mn-induced states close to the Mc(2×2)-point of the surface Brillouin zone are observed that are interpreted as exchange-split interface states.
[1] M. Wuttig et al. Phys. Rev. Lett. 70 (1993) 3619; W. Kim et al. Phys. Rev. B 65 (2002) 205407