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Ultrathin magnetic oxide EuO films on Si(001) using SiOx passivation : Controlled by hard x-ray photoemission spectroscopy

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2013

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Caspers, Christian
Flade, Stanley
Gorgoi, Mihaela
Gloskovskii, Andrei
Drube, Wolfgang
Schneider, Claus M.

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https://doi.org/10.1063/1.4795010
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Journal of Applied Physics. American Institute of Physics (AIP). 2013, 113(17), 17C505. ISSN 0021-8979. eISSN 1089-7550. Available under: doi: 10.1063/1.4795010

Zusammenfassung

We present the chemical and structural optimization of ultrathin magnetic oxide EuO films on silicon. By applying a controlled in situ passivation of the Si(001) surface with SiOx in the monolayer regime, metallic silicide contaminations at the interface can be effectively reduced down to a sub-monolayer coverage, as was carefully quantified by interface-sensitive hard x-ray photoemission spectroscopy. Heteroepitaxial growth of EuO on Si(001) is sustained for this ultrathin SiOx-passivation, and bulk-near magnetic properties are observed for the 4 nm-thin EuO films. Our successful combination of chemically and structurally optimized EuO/Si(001) heterostructures by ultrathin in situ SiOx passivation makes this system promising for an application as alternative spin functional tunnel contacts in spin-FETs.

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ISO 690CASPERS, Christian, Stanley FLADE, Mihaela GORGOI, Andrei GLOSKOVSKII, Wolfgang DRUBE, Claus M. SCHNEIDER, Martina MÜLLER, 2013. Ultrathin magnetic oxide EuO films on Si(001) using SiOx passivation : Controlled by hard x-ray photoemission spectroscopy. In: Journal of Applied Physics. American Institute of Physics (AIP). 2013, 113(17), 17C505. ISSN 0021-8979. eISSN 1089-7550. Available under: doi: 10.1063/1.4795010
BibTex
@article{Caspers2013-05-07Ultra-49700,
  year={2013},
  doi={10.1063/1.4795010},
  title={Ultrathin magnetic oxide EuO films on Si(001) using SiO<sub>x</sub> passivation : Controlled by hard x-ray photoemission spectroscopy},
  number={17},
  volume={113},
  issn={0021-8979},
  journal={Journal of Applied Physics},
  author={Caspers, Christian and Flade, Stanley and Gorgoi, Mihaela and Gloskovskii, Andrei and Drube, Wolfgang and Schneider, Claus M. and Müller, Martina},
  note={Article Number: 17C505}
}
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