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

(2) Advanced Light Source; (3) Technische Universitaet Wien; Austria); Berkeley; Eli Rotenberg (2); Germany; J. Schaefer (1); M. Hoinkis (1); P. Blaha (3); R. Claessen (1) ((1)Universitaet Augsburg

arxiv: cond-mat/0504670 · v1 · submitted 2005-04-26 · ❄️ cond-mat.other

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

J. Schaefer (1) , M. Hoinkis (1) , Eli Rotenberg (2) , P. Blaha (3) , R. Claessen (1) ((1)Universitaet Augsburg , Germany , (2) Advanced Light Source , Berkeley

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USA (3) Technische Universitaet Wien Austria)

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classification ❄️ cond-mat.other

keywords fermifilminterfacemajorityreflectionstandingstatessubstrate

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

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