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PreprintCC BY-NC-SA 4.0arXiv

Spin-polarization of the electric current in half-metallic Co2MnSi Heusler thin films

  • José Solano Córdova
  • Anna Maria Friedel
  • Quentin Rossi
  • Jérôme Robert
  • Yves Henry
  • Philipp Pirro
  • Sébastien Petit-Watelot
  • Stéphane Andrieu
  • Matthieu Bailleul
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Abstract

Using propagating spin wave spectroscopy we measure the spin wave Doppler shift in patterned MgO/Co2MnSi/MgO thin films and determine the degree of spin-polarization of the electric current. Our measurements reveal that the current is fully spin-polarized in the devices. This shows that the half-metallic character of the electron band structure translates into a fully spin polarized current flowing across the patterned films. Additionally, we measure a current-induced change of the spin-wave attenuation from which we estimate the non-adiabatic spin-transfer-torque parameter.

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Cite

BibTeXRIS
BibTeX
@misc{cordova2026spinpolarization,
  title = {{Spin-polarization of the electric current in half-metallic Co$_2$MnSi Heusler thin films}},
  author = {José Solano Córdova and Anna Maria Friedel and Quentin Rossi and Jérôme Robert and Yves Henry and Philipp Pirro and Sébastien Petit-Watelot and Stéphane Andrieu and Matthieu Bailleul},
  howpublished = {arXiv},
  year = {2026},
  month = jun,
  doi = {10.48550/arxiv.2606.04598},
  eprint = {2606.04598},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2606.04598},
  note = {CC BY-NC-SA 4.0},
}
RIS
TY  - UNPB
TI  - Spin-polarization of the electric current in half-metallic Co_2MnSi Heusler thin films
AU  - José Solano Córdova
AU  - Anna Maria Friedel
AU  - Quentin Rossi
AU  - Jérôme Robert
AU  - Yves Henry
AU  - Philipp Pirro
AU  - Sébastien Petit-Watelot
AU  - Stéphane Andrieu
AU  - Matthieu Bailleul
PY  - 2026
DA  - 2026/06/03
PB  - arXiv
DO  - 10.48550/arxiv.2606.04598
UR  - https://arxiv.org/abs/2606.04598
AB  - Using propagating spin wave spectroscopy we measure the spin wave Doppler shift in patterned MgO/Co_2MnSi/MgO thin films and determine the degree of spin-polarization of the electric current. Our measurements reveal that the current is fully spin-polarized in the devices. This shows that the half-metallic character of the electron band structure translates into a fully spin polarized current flowing across the patterned films. Additionally, we measure a current-induced change of the spin-wave attenuation from which we estimate the non-adiabatic spin-transfer-torque parameter.
ER  -