Intercalation of Ultrathin Ferromagnetic Iron Films at the Graphene/SiC Interface

@misc{rosch2026intercalation,
  title = {{Intercalation of Ultrathin Ferromagnetic Iron Films at the Graphene/SiC Interface}},
  author = {Niels Rösch and Rico Ehrler and Stefanie Suzanne Brinkman and Xin Liang Tan and Anders Christian Mathisen and Marc Stevens and Sascha Hermann and Olav Hellwig and Philip Schädlich and Hendrik Bentmann and Susanne Wolff and Thomas Seyller and Fabian Göhler},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.23728},
  eprint = {2610.23728},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.23728},
  note = {CC BY 4.0},
}

TY  - UNPB
TI  - Intercalation of Ultrathin Ferromagnetic Iron Films at the Graphene/SiC Interface
AU  - Niels Rösch
AU  - Rico Ehrler
AU  - Stefanie Suzanne Brinkman
AU  - Xin Liang Tan
AU  - Anders Christian Mathisen
AU  - Marc Stevens
AU  - Sascha Hermann
AU  - Olav Hellwig
AU  - Philip Schädlich
AU  - Hendrik Bentmann
AU  - Susanne Wolff
AU  - Thomas Seyller
AU  - Fabian Göhler
PY  - 2026
DA  - 2026/10/14
PB  - arXiv
DO  - 10.48550/arxiv.2610.23728
UR  - https://arxiv.org/abs/2610.23728
AB  - The intercalation of high-quality PASG-grown (polymer-assisted sublimation growth) zero-layer graphene on 4H-SiC(0001) with iron is studied using a deposition-and-annealing approach. We find that unlike other metals, Fe does not easily intercalate, and the intercalation procedure has to be balanced with the formation of iron silicides and graphitic carbon at the interface. After successful intercalation, the ultrathin iron films are protected against oxidation by the covering graphene sheet, and retain ferromagnetic behaviour with an in-plane easy axis even at room temperature. When exposed to a selenium-rich atmosphere at elevated temperatures, an almost complete exchange of Fe by Se is observed, imposing a major restriction for the formation of multi-element 2D compounds via sequential intercalation schemes.
ER  -