Publikation:

Rashba splitting of graphene-covered Au(111) revealed by quasiparticle interference mapping

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2014

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http://nbn-resolving.de/urn:nbn:de:bsz:352-0-266286
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https://doi.org/10.1103/PhysRevB.90.241406
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Physical Review B. 2014, 90(24), 241406. ISSN 0163-1829. eISSN 1095-3795. Available under: doi: 10.1103/PhysRevB.90.241406

Zusammenfassung

We report on low-temperature scanning tunneling spectroscopy measurements on epitaxial graphene flakes on Au(111). We show that using quasiparticle interference (QPI) mapping, we can discriminate between the electronic systems of graphene and Au(111). Beyond the scattering vectors, which can be ascribed to the elastic scattering within each of the systems, we observe QPI features related to the scattering process between graphene states and the Au(111) surface state. This additional interband scattering process at the graphene/Au(111) interface allows the direct quantitative determination of the Rashba-splitting of the Au(111) surface state, which cannot be evaluated from QPI measurements on pure Au(111). This experiment demonstrates a unique local spectroscopic approach to investigate the Rashba-split bands at weakly interacting epitaxial graphene/substrate interfaces.

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ISO 690LEICHT, Philipp, Julia TESCH, Samuel BOUVRON, Felix BLUMENSCHEIN, Philipp ERLER, Luca GRAGNANIELLO, Mikhail FONIN, 2014. Rashba splitting of graphene-covered Au(111) revealed by quasiparticle interference mapping. In: Physical Review B. 2014, 90(24), 241406. ISSN 0163-1829. eISSN 1095-3795. Available under: doi: 10.1103/PhysRevB.90.241406
BibTex
@article{Leicht2014Rashb-29466,
  year={2014},
  doi={10.1103/PhysRevB.90.241406},
  title={Rashba splitting of graphene-covered Au(111) revealed by quasiparticle interference mapping},
  number={24},
  volume={90},
  issn={0163-1829},
  journal={Physical Review B},
  author={Leicht, Philipp and Tesch, Julia and Bouvron, Samuel and Blumenschein, Felix and Erler, Philipp and Gragnaniello, Luca and Fonin, Mikhail},
  note={Article Number: 241406}
}
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