Berlin 2012 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe

O: Fachverband Oberflächenphysik

O 18: Spin-orbit interaction

O 18.5: Vortrag

Montag, 26. März 2012, 17:00–17:15, A 060

Empty bulk state with a Rashba-type spin-polarization observed on Au(111) — •Sune N. P. Wissing, Anna Zumbülte, Christian Eibl, Anke B. Schmidt, and Markus Donath — Physikalisches Institut, Westfälische Wilhelms-Universität Münster, Germany

Recently, we demonstrated the potential of spin- and angle-resolved inverse photoemission for investigating Rashba phenomena by following the well-known Rashba-split surface state of Au(111) beyond the Fermi level.

Here, we report on the first measurements of a Rashba-type spin polarization in unoccupied bulk states on Au(111). We observe a downward-dispersing spectral feature with strong spin polarization. This feature is attributed to a transition between sp-like bulk states. We will discuss the origin of the observed spin polarization, also in view of recent theoretical and experimental results concerning Rashba splitting in bulk states [1,2].

[1] A. Kimura et al.: Phys. Rev. Lett. 105, 076804 (2010)

[2] E. E. Krasovskii and E. V. Chulkov: Phys. Rev. B 83, 155401 (2011)