Electronic Structure of Surfaces and Interfaces
Summary
The activities in our research group are focusing on the electronic structure of surfaces and interfaces as well as the electronic interactions. The main experimental techniques that we use are scanning tunneling microscopy/spectroscopy to study the local electronic structure atomically resolved as well as angle resolved and x-ray photoemission spectroscopy to explore momentum space. Other experimental techniques, such as low-energy electron diffraction or Kerr microscopy are used in collaboration. Since new physics oftentimes involves new approaches, we are also active in instrument development, not just improving existing equipment, but also exploring new directions and ideas. The following list is a brief summary of the activities with links to further details:
Research Projects:-
Giant spin-splitting on metallic and semiconducting surfaces
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Tuning the spin-splitting parameter in a mixed surface alloy
Team Members
| Dr. Christian Ast |
Group Leader |
| Dr. Hadj Benia |
PostDoc |
| Maximilian Assig |
PhD Student |
| Isabella Gierz |
PhD Student |
| Fabian Zinser |
PhD Student |
| Carola Straßer |
Master Student |
Key publications
1. C. R. Ast, J. Henk, A. Ernst, L.
Moreschini, M. C. Falub, D. Pacilé, P. Bruno, K. Kern, and M.
Grioni
Giant spin splitting through surface alloying
Phys. Rev. Lett. 98, 186807 (2007)
2. C.R. Ast, G. Wittich, P. Wahl, R. Vogelgesang, D.
Pacilé, M.C. Falub, L. Moreschini, M. Papagno, M. Grioni, and K.
Kern
Local detection of spin-orbit splitting by scanning tunneling
spectroscopy
Phys. Rev. B 75, 201401(R) (2007)
3. I. Gierz, T. Suzuki, E. Frantzeskakis, S. Pons, S. Ostanin, A. Ernst, J. Henk, M. Grioni, K. Kern, and C. R. Ast
Silicon surface with giant spin-splitting
Phys. Rev. Lett. 103, 046803 (2009)
