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  Hall effect and electronic structure of Co2FexMn1-xSi films

Schneider, H., Vilanova Vidal, E., Chadov, S., Fecher, G. H., Felser, C., & Jakob, G. (2010). Hall effect and electronic structure of Co2FexMn1-xSi films. Journal of Magnetism and Magnetic Materials, 322(6), 579-584. doi:10.1016/j.jmmm.2009.09.048.

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Schneider, H.1, Author
Vilanova Vidal, E.1, Author
Chadov, S.1, Author
Fecher, G. H.1, Author
Felser, C.2, Author           
Jakob, G.1, Author
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1external, ou_persistent22              
2External Organizations, ou_persistent22              

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 Abstract: Tunneling experiments have shown that in order to retain half-metallicity at room temperature not only a large gap is required but also a Fermi energy considerably distant from the minority band edges. We correlate the position of the Fermi energy in the spin minority gap obtained from band structure calculations to Hall effect experiments. As a model system we chose Co2FexMn1-xSiCo2FexMn1-xSi, where the Fermi energy was calculated to move from the valence band edge of the minority states to the conduction band edge with increasing x . On high quality laser ablated epitaxial films we observe a sign change of both the normal and the anomalous Hall effect with doping. The experimental data agree with band structure calculations done in the LSDA+DMFTLSDA+DMFT scheme.

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 Dates: 2010-03-01
 Publication Status: Issued
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 Identifiers: DOI: 10.1016/j.jmmm.2009.09.048
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Title: Journal of Magnetism and Magnetic Materials
Source Genre: Journal
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Publ. Info: Amsterdam : North-Holland
Pages: - Volume / Issue: 322 (6) Sequence Number: - Start / End Page: 579 - 584 Identifier: ISSN: 0304-8853
CoNE: https://pure.mpg.de/cone/journals/resource/954925512464