Imaging spin-reorientation transitions in consecutive atomic Co layers on Ru(0001)

Farid El Gabaly, Silvia Gallego, Carmen Muñoz, Laszlo Szunyogh, Peter Weinberger, Christof Klein, Andreas K. Schmid, Kevin F. McCarty, Juan De La Figuera

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By means of spin-polarized low-energy electron microscopy, we show that the magnetic easy axis of one to three atomic-layer thick cobalt films on Ru(0001) changes its orientation twice during deposition: One-monolayer and three-monolayer thick films are magnetized in plane, while two-monolayer films are magnetized out of plane. The Curie temperatures of films thicker than one monolayer are well above room temperature. Fully relativistic calculations based on the screened Korringa-Kohn-Rostoker method demonstrate that only for two-monolayer cobalt films does the interplay between strain, surface, and interface effects lead to perpendicular magnetization.

Original languageEnglish
Article number147202
JournalPhysical review letters
Issue number14
Publication statusPublished - Apr 24 2006


ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

El Gabaly, F., Gallego, S., Muñoz, C., Szunyogh, L., Weinberger, P., Klein, C., Schmid, A. K., McCarty, K. F., & De La Figuera, J. (2006). Imaging spin-reorientation transitions in consecutive atomic Co layers on Ru(0001). Physical review letters, 96(14), [147202].