Spin-Polarized Standing Waves in the Fermi Surface of a Ferromagnetic Thin Film
Schaefer, J. · Hoinkis, M. · Rotenberg, Eli · Blaha, P. · Claessen, R.
Original · EN
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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