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Electronic structure of EuO spin filter tunnel contacts directly on silicon

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2011

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Caspers, Christian
Gray, Alexander X.
Kaiser, Alexander M.
Gloskovskii, Andrei
Fadley, Charles S.
Drube, Wolfgang
Schneider, Claus M.

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https://doi.org/10.1002/pssr.201105403
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Physica Status Solidi (RRL) - Rapid Research Letters. Wiley. 2011, 5(12), pp. 441-443. ISSN 1862-6254. eISSN 1862-6270. Available under: doi: 10.1002/pssr.201105403

Zusammenfassung

We present an electronic structure study of a magnetic oxide/ semiconductor model system, EuO on silicon, which is dedicated for efficient spin injection and spin detection in silicon‐based spintronics devices. A combined electronic structure analysis of Eu core levels and valence bands using hard X‐ray photoemission spectroscopy was performed to quantify the nearly ideal stoichiometry of EuO “spin filter” tunnel barriers directly on silicon, and the absence of silicon oxide at the EuO/Si interface. These results provide evidence for the successful integration of a magnetic oxide tunnel barrier with silicon, paving the way for the future integration of magnetic oxides into functional spintronics devices. Hard X‐ray photoemission spectroscopy of an Al/EuO/Si heterostructure probing the buried EuO and EuO/Si interface.

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530 Physik

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magnetic materials, EuO, X‐ray photoemission spectra, spin injection, silicon

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ISO 690CASPERS, Christian, Martina MÜLLER, Alexander X. GRAY, Alexander M. KAISER, Andrei GLOSKOVSKII, Charles S. FADLEY, Wolfgang DRUBE, Claus M. SCHNEIDER, 2011. Electronic structure of EuO spin filter tunnel contacts directly on silicon. In: Physica Status Solidi (RRL) - Rapid Research Letters. Wiley. 2011, 5(12), pp. 441-443. ISSN 1862-6254. eISSN 1862-6270. Available under: doi: 10.1002/pssr.201105403
BibTex
@article{Caspers2011-12Elect-49769,
  year={2011},
  doi={10.1002/pssr.201105403},
  title={Electronic structure of EuO spin filter tunnel contacts directly on silicon},
  number={12},
  volume={5},
  issn={1862-6254},
  journal={Physica Status Solidi (RRL) - Rapid Research Letters},
  pages={441--443},
  author={Caspers, Christian and Müller, Martina and Gray, Alexander X. and Kaiser, Alexander M. and Gloskovskii, Andrei and Fadley, Charles S. and Drube, Wolfgang and Schneider, Claus M.}
}
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