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Room-temperature observation of high-spin polarization of epitaxialCrO2(100) island films at the Fermi energy

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2002

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König, Christian
Güntherodt, Gernot
Senz, Stephan
Hesse, Dietrich

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Applied Physics Letters. 2002, 80(22), pp. 4181-4183. Available under: doi: 10.1063/1.1482142

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Epitaxial CrO2(100) island films have been grown on TiO2(100) substrates by a chemical-vapor deposition technique. Well-controlled surface and interface properties of the CrO2(100) films were confirmed by scanning tunneling microscopy and transmission electron microscopy, respectively. Spin- and angle-resolved photoemission spectroscopy at room temperature revealed an energy gap of about 2 eV below Fermi level EF for spin-down electrons and a spin polarization of about +95% at EF. After extended sputtering, the spin polarization can be recovered from about +10% up to +85% upon annealing.

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ISO 690DEDKOV, Yuriy S., Mikhail FONIN, Christian KÖNIG, Ulrich RÜDIGER, Gernot GÜNTHERODT, Stephan SENZ, Dietrich HESSE, 2002. Room-temperature observation of high-spin polarization of epitaxialCrO2(100) island films at the Fermi energy. In: Applied Physics Letters. 2002, 80(22), pp. 4181-4183. Available under: doi: 10.1063/1.1482142
BibTex
@article{Dedkov2002Roomt-4677,
  year={2002},
  doi={10.1063/1.1482142},
  title={Room-temperature observation of high-spin polarization of epitaxialCrO2(100) island films at the Fermi energy},
  number={22},
  volume={80},
  journal={Applied Physics Letters},
  pages={4181--4183},
  author={Dedkov, Yuriy S. and Fonin, Mikhail and König, Christian and Rüdiger, Ulrich and Güntherodt, Gernot and Senz, Stephan and Hesse, Dietrich}
}
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