Journal Article

PreJuSER-8721

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Quantum-well induced giant spin-orbit splitting

Mathias, S. ; Ruffing, A. ; Deicke, F. ; Wiesenmayer, M. ; Sakar, I. ; Bihlmayer, G.FZJ* ; Chulkov, E. V. ; Koroteev, Y. M. ; Echenique, P. M. ; Bauer, M. ; Aeschlimann, M.

2010
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/7233  doi:10.1103/PhysRevLett.104.066802

Abstract: We report on the observation of a giant spin-orbit splitting of quantum-well states in the unoccupied electronic structure of a Bi monolayer on Cu(111). Up to now, Rashba-type splittings of this size have been reported exclusively for surface states in a partial band gap. With these quantum-well states we have experimentally identified a second class of states that show a huge spin-orbit splitting. First-principles electronic structure calculations show that the origin of the spin-orbit splitting is due to the perpendicular potential at the surface and interface of the ultrathin Bi film. This finding allows for the direct possibility to tailor spin-orbit splitting by means of thin-film nanofabrication.

Keyword(s): J

Note: This work was supported by the DFG GRK 792 and the DFG SFB/TRR49, the UPV/EHU (Grant No. GIC07IT36607), the Departamento de Educacion del Gobierno Vasco, and the Spanish MCyT (Grant No. FIS200766711C0101).

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (IFF-1)
2. Quanten-Theorie der Materialien (IAS-1)
3. Jülich-Aachen Research Alliance - Fundamentals of Future Information Technology (JARA-FIT)
4. Jülich-Aachen Research Alliance - Simulation Sciences (JARA-SIM)

Research Program(s):

1. Grundlagen für zukünftige Informationstechnologien (P42)

Appears in the scientific report 2010

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