Anomalous magnetic anisotropy of the topmost surface layer of Ni(110)
Marco Busch, Jens Lienemann, Michael Potthoff, Helmut Winter
TL;DR
This study investigates the magnetic anisotropy of the top surface layer of Ni(110) and Fe/Ni(110) films, revealing unexpected surface magnetization orientations using depth-sensitive techniques.
Contribution
It demonstrates the differing magnetic orientations of surface layers in Ni(110) and Fe/Ni(110) using novel electron capture methods.
Findings
Ni surface layer magnetization is not aligned with easy axes.
Fe on Ni(110) surface layer magnetization aligns with Fe's easy axes.
Surface magnetic anisotropy differs from bulk behavior.
Abstract
The orientation of the magnetization of a Ni(110) surface was investigated using techniques with different probing depths. By making use of electron capture into excited states of fast He atoms, we found that the magnetization of the topmost surface layer is not aligned along the easy axes of Ni. However, for a 50 ML film Fe on Ni(110) we observed the magnetization of the topmost Fe surface layer is along the easy axes of Fe.
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