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Photoemission study of the Fe(001)/MgO interface for varying oxidation conditions of magnesium oxide

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2007

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Matthes, Frank
Schneider, Claus M.

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https://doi.org/10.1063/1.2711418
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Journal of Applied Physics. American Institute of Physics (AIP). 2007, 101(9), 09G519. ISSN 0021-8979. eISSN 1089-7550. Available under: doi: 10.1063/1.2711418

Zusammenfassung

The nature of interface bonding essentially determines the spin polarization of tunneling currents through ferromagnet/insulator interfaces. We focus on the influence of ultrathin off-stoichiometric MgO coverages on the spin-polarized electronic structure of the (001) surface of bcc-Fe. By applying a combination of low-energy spin-resolved and core-level photoelectron spectroscopy, we show that the MgO stoichiometry has a direct impact on the interfacial spin polarization. The results underline the importance of controlling the chemical composition and bonding at ferromagnet/oxide interfaces to further optimize spin-dependent tunneling devices.

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ISO 690MÜLLER, Martina, Frank MATTHES, Claus M. SCHNEIDER, 2007. Photoemission study of the Fe(001)/MgO interface for varying oxidation conditions of magnesium oxide. In: Journal of Applied Physics. American Institute of Physics (AIP). 2007, 101(9), 09G519. ISSN 0021-8979. eISSN 1089-7550. Available under: doi: 10.1063/1.2711418
BibTex
@article{Muller2007-05Photo-49808,
  year={2007},
  doi={10.1063/1.2711418},
  title={Photoemission study of the Fe(001)/MgO interface for varying oxidation conditions of magnesium oxide},
  number={9},
  volume={101},
  issn={0021-8979},
  journal={Journal of Applied Physics},
  author={Müller, Martina and Matthes, Frank and Schneider, Claus M.},
  note={Article Number: 09G519}
}
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