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Séminaire nanostructures et systèmes quantiques

Angle Resolved PhotoElectron Spectroscopy on low-dimensional electronic states : Case studies and latest developments

E. Frantzeskakis

Angle Resolved PhotoElectron Spectroscopy (ARPES) is the ideal tool to acquire information about the electronic bandstructure of systems with reduced dimensionality. Different case studies will be presented ranging from the direct observation of the Rashba-Bychkov effect on metallic surface alloys [1, 2] to the open question of a high-mobility two-dimensional electron gas (2DEG) on the vacuum annealed (100) surface of SrTiO_3 . In the aforementioned examples, single-spin electronic states and strong electron correlations can be directly probed by ARPES.This traditionally spatial-integrating technique has entered the nanometric range in the ANTARES beamline of SOLEIL. At ANTARES the combination of reciprocal- and real-space sensitivity opens up additional research directions [3].

[1] C. R. Ast et al., PRL 98, 186807 (2007)

[2] E. Frantzeskakis et al., PRL 101, 196805 (2008)

[3] E. Frantzeskakis et al., PRB 85, 125115 (2012)