6533b824fe1ef96bd12814eb

RESEARCH PRODUCT

Towards a full Heusler alloy showing room temperature half-metallicity at the surface

Mirko CinchettiM. Sánchez AlbanedaJan-peter WüstenbergMartin AeschlimannF. SteebMartin JourdanA. Conca

subject

Surface (mathematics)Condensed Matter - Materials ScienceMaterials scienceAcoustics and UltrasonicsCondensed matter physicsSpin polarizationMetallicityAlloyFermi levelMaterials Science (cond-mat.mtrl-sci)FOS: Physical sciencesengineering.materialCondensed Matter PhysicsEpitaxySurfaces Coatings and FilmsElectronic Optical and Magnetic Materialssymbols.namesakeengineeringsymbolsSpin (physics)Layer (electronics)

description

In this article we investigate the surface spin polarization in a 100 nm Co2Cr0.6Fe0.4Al (CCFA) film grown ex situ epitaxially on MgO(100) with a 10 nm Fe buffer layer by means of spin resolved photoemission. We show that a careful in situ preparation of the sample surface leads to values for the room temperature spin polarization up to 45% at the Fermi level. To our knowledge, this is the highest value measured so far at the surface region of a full Heusler alloy at room temperature.

yearjournalcountryeditionlanguage
2007-03-02
10.1088/0022-3727/40/6/s05http://arxiv.org/abs/cond-mat/0609504