Dresden 2020 – scientific programme

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DS: Fachverband Dünne Schichten

DS 30: Poster: Organic Thin Films and Thin Oxides

DS 30.14: Poster

Wednesday, March 18, 2020, 15:00–18:00, P1A

Emergence of a surface 2DEG in Anatase (001) thin films — •Marius Fuchs¹, Chiara Bigi^2,3, Alessandro Troglia^2,3, Pasquale Orgiani², Jun Jujii², Ivana Vobornik², Giancarlo Panaccione², Giorgio Rossi^2,3, Domenico Di Sante¹, and Giorgio Sangiovanni¹ — ¹Institut für Physik und Astrophysik, Universität Würzburg, 97074 Würzburg, Germany — ²CNR-ION TASC laboratory, c/o Area Science Park - Basovizza, Strada Statale 14 km 163,5 - 34149 Trieste, Italy — ³University of Milano, 20133 Milano, Italy

We report the emergence of a surface 2DEG in Anatase (001) thin films above a threshold thickness. DFT reveals the subsurface Ti dxy orbitals to nourish the 2DEG. The mechanism of formation is further analyzed by using Wannier functions. Additionally we investigate the phononic influence on the electronic dispersion.