Europhys. Lett.
Volume 46, Number 2, April II 1999
Page(s) 231 - 237
Section Condensed matter: electronic structure, electrical, magnetic and optical properties
Published online 01 December 2003
DOI: 10.1209/epl/i1999-00249-7

Europhys. Lett, 46 (2), pp. 231-237 (1999)

Parallel, antiparallel and no magnetic coupling
in submonolayer Mn on Fe(110)

O. Rader 1, C. Pampuch 1, W. Gudat 1, A. Dallmeyer 2
C. Carbone 2 and W. Eberhardt 2

1 Berliner Elektronenspeicherring-Gesellschaft für Synchrotronstrahlung (BESSY)
Lentzeallee 100, D-14195 Berlin, Germany
2 Institut für Festkörperforschung, Forschungszentrum Jülich - D-52425 Jülich, Germany

(received 7 August 1998; accepted in final form 1 February 1999)

PACS. 73.20Hb - Impurity and defect levels; energy states of adsorbed species.
PACS. 75.30Pd - Surface magnetism.


An unusual sequence of magnetic couplings in the epitaxial-growth system Mn/ Fe(110) is revealed using the element-selective magnetic circular X-ray dichroism (MCXD) method. Clean Mn shows an unprecedented vanishing magnetization up to 0.3 monolayers (ML). At 0.4 ML a parallel Mn-Fe coupling sets in with relatively small net Mn moment ($1.0\pm0.2\mu_{\rm B}$ for 0.4-2 ML). Successive adsorption of oxygen changes the Mn-Fe coupling from parallel to zero to antiparallel and eventually to zero again.


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