Regensburg 2016 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 17: Low-Dimensional Systems: Oxide Hetero-Interfaces
TT 17.1: Vortrag
Montag, 7. März 2016, 15:00–15:15, H22
Universal Fabrication of Two-Dimensional Electron Systems in Functional Oxides — •Tobias C. Rödel1,2, Frank Fortuna1, Shamashis Sengupta3, Emmanouil Frantzeskakis1, Patrick Le Fèvre2, François Bertran2, Bernard Mercy4, Sylvia Matzen5, Guillaume Agnus5, Thomas Maroutian5, Philippe Lecoeur5, and Andrés Felipe Santander-Syro1 — 1CSNSM, Univ. Paris-Sud, CNRS/IN2P3, Université Paris-Saclay, 91405 Orsay, France — 2Synchrotron SOLEIL, L’Orme des Merisiers, Saint-Aubin-BP48, 91192 Gif-sur-Yvette, France — 3Laboratoire de Physique des Solides, Univ. Paris-Sud, CNRS, Université Paris-Saclay, 91405 Orsay, France — 4CRISMAT, ENSICAEN-CNRS UMR6508, 6 bd. Maréchal Juin, 14050 Caen, France — 5Institut d’Electronique Fondamentale, Univ. Paris-Sud, CNRS, Université Paris-Saclay, 91405 Orsay, France
Two-dimensional electron systems (2DESs) in transition metal oxides are currently a field of intense research in the quest of novel functionalities in materials showing competing ground states. The 2DESs in SrTiO3-based interfaces have been the cornerstone of such research. To go beyond, it is essential to create new types of oxide 2DESs in a technically easy way. Here we show, using (angle-resolved) photoemission spectroscopy in UHV that the deposition of atomically-thin layers of an elementary reducing agent results in the creation of 2DESs at the interface of several functional oxides, such as the ferroelectric BaTiO3. This technique can be adapted for transport studies and opens the possibility to study 2DESs in strongly-correlated insulating oxides.