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| 001 | 300107 | ||
| 005 | 20250717112529.0 | ||
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| 245 | _ | _ | |a Direct observation of half-metallicity in the Heusler compound $Co_{2}MnSi$ |
| 260 | _ | _ | |a London |c 2014 |b Nature Publishing Group |
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| 520 | _ | _ | |a 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 (93^{+7}_{-11}) % 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. |
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| 773 | _ | _ | |a 10.1038/ncomms4974 |g Vol. 5 |0 PERI:(DE-600)2553671-0 |p 3974 |t Nature Communications |v 5 |y 2014 |x 2041-1723 |
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