About: Direct observation of half-metallicity in the Heusler compound Co2MnSi     Goto   Sponge   NotDistinct   Permalink

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  • 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)
Title
  • Direct observation of half-metallicity in the Heusler compound Co2MnSi
  • Direct observation of half-metallicity in the Heusler compound Co2MnSi (en)
skos:prefLabel
  • Direct observation of half-metallicity in the Heusler compound Co2MnSi
  • Direct observation of half-metallicity in the Heusler compound Co2MnSi (en)
skos:notation
  • RIV/49777513:23640/14:43922493!RIV15-MSM-23640___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(ED2.1.00/03.0088)
http://linked.open...iv/cisloPeriodika
  • květen 2014
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
  • Minár, Jan
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 11647
http://linked.open...ai/riv/idVysledku
  • RIV/49777513:23640/14:43922493
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • dynamical mean field theory; first-principles electronic structure calculations; spintronic; ferromagnetic thin films; Photoemission (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV
  • [186E55759537]
http://linked.open...i/riv/nazevZdroje
  • Nature Communications
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 5
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.
http://linked.open...ain/vavai/riv/wos
  • 000337540400001
issn
  • 2041-1723
number of pages
http://bibframe.org/vocab/doi
  • 10.1038/ncomms4974
http://localhost/t...ganizacniJednotka
  • 23640
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