Spin-Polarized Standing Waves in the Fermi Surface of a Ferromagnetic Thin Film

Details Spin-Polarized Standing Waves in the Fermi Surface of a Ferromagnetic Thin Film Spin-Polarized Standing Waves in the Fermi Surface of a Ferromagnetic Thin Film

2005-04-26

arxiv.org/abs/cond-mat/0504670v1

Physics

Condensed Matter

Other Condensed Matter

4 pages, 4 figures

Scientific paper

The spin-selective electron reflection at a ferromagnetic-paramagnetic interface is investigated using Fe films on a W(110) substrate. Angle-resolved photoemission of the majority and minority Fermi surfaces of the Fe film is used to probe standing wave formation. Intense quantum well states resulting from interfacial reflection are observed exclusively for majority states. Such high spin polarization is explained by the Fermi surface topology of the connecting substrate, and we argue that Fe/W is a particularly suitable interface for that purpose.

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