Berlin 2005 – wissenschaftliches Programm

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MA: Magnetismus

MA 5: Spinstrukturen und magnetische Phasenüberg
änge

MA 5.2: Vortrag

Freitag, 4. März 2005, 10:45–11:00, TU EMH225

Investigation of the topography and the magnetic structure of reconstructed Mn films on Fe(001) — •C. L. Gao, U. Schlickum, W. Wulfhekel, and J. Kirschner — Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, 06120 Halle

It is well known that Mn grows layer-by-layer on Fe(001) up to about 15 to 20 monolayers at a substrate temperature of about 100^∘C. Mn is a topological antiferromagnet thus, the coupling within a Mn atomic layer is ferromagnetic while adjacent layers are coupled antiferromagnetically to each other. The layer-wise antiferromagentic order of neighbored Mn layers was studied on the nanoscale with an in-plane spin-polarized scanning tunneling microscope (Sp-STM) [1]. In additions, three dimensional islands were observed. In this contribution, we focus the topographic and magnetic behavior of these islands. Their typical height is between 0.8 nm and 3 nm. The surface atoms of the Mn islands are reconstructed into a periodic pattern of parallel stripes. An antiferromagnetic order of the reconstructed surface atoms was observed.

[1] U. Schlickum, N. Janke-Gilman, W. Wulfhekel, and J. Kirschner, Phys. Rev. Lett. 92, 107203 (2004).