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Description
| - Ferromagnetic thin films of Heusler compounds are highly relevant for spintronic applications owing to their predicted half-metallicity, that is, 100% spin polarization at the Fermi energy. However, experimental evidence for this property is scarce. Here we investigate epitaxial thin films of the compound Co2MnSi in situ by ultraviolet-photoemission spectroscopy, taking advantage of a novel multi-channel spin filter. By this surface sensitive method, an exceptionally large spin polarization of at room temperature is observed directly. As a more bulk sensitive method, additional ex situ spin-integrated high energy X-ray photoemission spectroscopy experiments are performed. All experimental results are compared with advanced band structure and photoemission calculations which include surface effects. Excellent agreement is obtained with calculations, which show a highly spin polarized bulk-like surface resonance ingrained in a half metallic bulk band structure.
- Ferromagnetic thin films of Heusler compounds are highly relevant for spintronic applications owing to their predicted half-metallicity, that is, 100% spin polarization at the Fermi energy. However, experimental evidence for this property is scarce. Here we investigate epitaxial thin films of the compound Co2MnSi in situ by ultraviolet-photoemission spectroscopy, taking advantage of a novel multi-channel spin filter. By this surface sensitive method, an exceptionally large spin polarization of at room temperature is observed directly. As a more bulk sensitive method, additional ex situ spin-integrated high energy X-ray photoemission spectroscopy experiments are performed. All experimental results are compared with advanced band structure and photoemission calculations which include surface effects. Excellent agreement is obtained with calculations, which show a highly spin polarized bulk-like surface resonance ingrained in a half metallic bulk band structure. (en)
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Title
| - Direct observation of half-metallicity in the Heusler compound Co2MnSi
- Direct observation of half-metallicity in the Heusler compound Co2MnSi (en)
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skos:prefLabel
| - Direct observation of half-metallicity in the Heusler compound Co2MnSi
- Direct observation of half-metallicity in the Heusler compound Co2MnSi (en)
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skos:notation
| - RIV/49777513:23640/14:43922493!RIV15-MSM-23640___
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/49777513:23640/14:43922493
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - dynamical mean field theory; first-principles electronic structure calculations; spintronic; ferromagnetic thin films; Photoemission (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
| - GB - Spojené království Velké Británie a Severního Irska
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http://linked.open...i/riv/nazevZdroje
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http://linked.open...cetTvurcuVysledku
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http://linked.open...vavai/riv/projekt
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
| - Ebert, H.
- Braun, J.
- Minár, Jan
- Balke, B.
- Chadov, S.
- Elmers, H. J.
- Felser, C.
- Gloskovskii, A.
- Jourdan, M.
- Kläui, M.
- Kolbe, M.
- Kronenberg, A.
- Schönhense, G.
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http://linked.open...ain/vavai/riv/wos
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http://bibframe.org/vocab/doi
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