Berlin 2012 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 5: Spin Structures and Magnetic Phase Transitions
MA 5.4: Vortrag
Montag, 26. März 2012, 10:15–10:30, H 0112
Electrons confinement effect on orbital moment and magnetocrystalline anisotropy of Fe/Ag(001) — •Maciej Dabrowski1, Uwe Bauer1, Marek Przybylski1, Takeshi Nakagawa2, Yasumasa Takagi2, Toshihiko Yokoyama2, and Jürgen Kirschner1 — 1Max-Planck-Institut für Mikrostrukturphysik, Weinberg 2, D-06120 Halle, Germany — 2Department of Materials Molecular Structure, Institute for Molecular Science, Myodaiji-cho, Okazaki, 444-8585, Japan
In a thin film, electron motion can be confined by potential barriers at the interfaces, resulting in the formation of quantum well states (QWS). In particular, in ferromagnetic thin films, the quantization of d-bands can lead to oscillations of the magnetocrystalline anisotropy as a function of film thickness [1,2].
Using x-ray magnetic circular dichroism (XMCD) and magneto-optic Kerr effect (MOKE), we demonstrate a relation between electrons confinement, magnetocrystalline anisotropy and orbital moment in Fe films grown on vicinal surfaces of Ag(001). We show that a spin reorientation transition from in-plane to out-of-plane simultaneously occurs with in-plane magnetization rotation, which is determined by the QWS contribution to the magnetocrystalline anisotropy.
[1] J. Li, M. Przybylski, F. Yildiz, X. D. Ma, and Y. Z. Wu,
Phys. Rev. Lett. 102, 207206 (2009)
[2] U. Bauer M. Dabrowski, M. Przybylski, and J. Kirschner,
Phys. Rev. B 84, 144433 (2011)