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Influence of MgO overlayers on the electronic states of bct Co(001) thin films grown on bcc Fe(001)/GaAs(001)

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2006

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Tong, Liu-Niu
Deng, Cai-Lian
Matthes, Frank
Schneider, Claus M.
Lee, Chan-Gyu

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https://doi.org/10.1103/PhysRevB.73.214401
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Physical Review B. American Physical Society (APS). 2006, 73(21), 214401. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.73.214401

Zusammenfassung

The spin polarization of the valence band electronic states of strained bcc Co(001) and MgO/Co(001) thin films grown onto a bcc Fe(001) seed layer on GaAs(001) are investigated by employing spin-resolved photoemission spectroscopy. The experimental results are compared with the calculated energy band structure of bcc and bct Co(001), and discussed in the framework of the interband transition model, which allows one to ascribe the observed spectral features to bands of given spin and spatial symmetry. In contrast to the positive spin polarization observed at the MgO/Fe(001) interface, a large negative spin polarization of the electronic states at the Fermi level is observed for the MgO/Co/Fe/GaAs(001) system. Such a large negative spin polarization is attributed to a change in the energy band structure at the bct Co/bcc Fe(001) interface.

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ISO 690TONG, Liu-Niu, Cai-Lian DENG, Frank MATTHES, Martina MÜLLER, Claus M. SCHNEIDER, Chan-Gyu LEE, 2006. Influence of MgO overlayers on the electronic states of bct Co(001) thin films grown on bcc Fe(001)/GaAs(001). In: Physical Review B. American Physical Society (APS). 2006, 73(21), 214401. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.73.214401
BibTex
@article{Tong2006-06-01Influ-49771,
  year={2006},
  doi={10.1103/PhysRevB.73.214401},
  title={Influence of MgO overlayers on the electronic states of bct Co(001) thin films grown on bcc Fe(001)/GaAs(001)},
  number={21},
  volume={73},
  issn={2469-9950},
  journal={Physical Review B},
  author={Tong, Liu-Niu and Deng, Cai-Lian and Matthes, Frank and Müller, Martina and Schneider, Claus M. and Lee, Chan-Gyu},
  note={Article Number: 214401}
}
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