Spin polarization at ferromagnet-insulator interfaces : The important role of stoichiometry in MgO/Fe(001)

Müller, Martina; Matthes, Frank; Schneider, Claus M.

Spin polarization at ferromagnet-insulator interfaces : The important role of stoichiometry in MgO/Fe(001)

Dateien

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Datum

2007

Autor:innen

Müller, Martina

Matthes, Frank

Schneider, Claus M.

DOI (zitierfähiger Link)

https://doi.org/10.1209/0295-5075/80/17007

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

EPL (Europhysics Letters). Institute of Physics Publishing. 2007, 80(1), 17007. ISSN 0295-5075. eISSN 1286-4854. Available under: doi: 10.1209/0295-5075/80/17007

Zusammenfassung

The electronic structure of ferromagnet-insulator interfaces plays a key role in spin-dependent transport processes by determining the spin polarization of the tunneling charge carriers. Employing spin-polarized, angle-resolved photoelectron spectroscopy we studied the spin-resolved electronic structure in the model system MgO/Fe(001) and observed a surprisingly multifaceted influence of the MgO stoichiometry. In particular, oxygen-deficient MgO barriers are found to strongly enhance the interfacial spin polarization. The results highlight the important role of the specific nature of the oxygen bonding and its relevance for the tunnel magnetoresistance effect.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

MÜLLER, Martina, Frank MATTHES, Claus M. SCHNEIDER, 2007. Spin polarization at ferromagnet-insulator interfaces : The important role of stoichiometry in MgO/Fe(001). In: EPL (Europhysics Letters). Institute of Physics Publishing. 2007, 80(1), 17007. ISSN 0295-5075. eISSN 1286-4854. Available under: doi: 10.1209/0295-5075/80/17007

BibTex

@article{Muller2007-10-01polar-49710,
  year={2007},
  doi={10.1209/0295-5075/80/17007},
  title={Spin polarization at ferromagnet-insulator interfaces : The important role of stoichiometry in MgO/Fe(001)},
  number={1},
  volume={80},
  issn={0295-5075},
  journal={EPL (Europhysics Letters)},
  author={Müller, Martina and Matthes, Frank and Schneider, Claus M.},
  note={Article Number: 17007}
}

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