Interfacial nanostructure induced spin-reorientation transition in Ni/Fe/Ni/W(110)

Details Interfacial nanostructure induced spin-reorientation transition in Ni/Fe/Ni/W(110) Interfacial nanostructure induced spin-reorientation transition in Ni/Fe/Ni/W(110)

2011-04-27

arxiv.org/abs/1104.5266v1

Published - Phys. Rev. B 83, 144420 (2011)

Physics

Condensed Matter

Materials Science

4 figures

Scientific paper

10.1103/PhysRevB.83.144420

We investigated the mechanism of the spin-reorientation transition (SRT) in the Ni/Fe/Ni/W(110) system using in situ low-energy electron microscopy, x-ray magnetic circular dichroism measurements, and first principles electronic structure calculations. We discovered that the growth of Fe on a flat Ni film on a W (110) crystal resulted in the formation of nanosized particles, instead of a uniform monolayer of Fe as commonly assumed. This interfacial nanostructure leads to a change of the system's dimensionality from two dimensional- to three dimensional-like, which simultaneously weakens the dipolar interaction and enhances the spin-orbit coupling in the system and drives the observed SRT.

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