Berlin 2024 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 58: SrTiO3: A Versatile Material from Bulk Quantum Paraelectric to 2D Superconductor: Poster (joint session TT/KFM/MA/O)
Mittwoch, 20. März 2024, 15:00–18:00, Poster E
Strontium titanate (SrTiO3) is a paradigmatic material that plays an important role in various fields of solid-state physics, surface science and catalysis: The pure bulk phase is a wide-band-gap semiconductor that upon cooling becomes a textbook quantum paraelectric. When slightly doped, SrTiO3 turns into a Fermi-liquid-type metal that becomes superconducting at extremely low charge carrier density. SrTiO3-based surfaces and interfaces host un-conventional electronic states such as quasi-two-dimensional electron liquid, magnetism and superconductivity. Despite intensive studies over the past decades, SrTiO3 continues to reveal surprising new phenomena that challenge the established views on this material. To this end achieving light-induced nonequilibrium states and the recent preparation of a 2D oxide based on SrTiO3 opens new playgrounds for research. This Focus Session will present exciting developments in the study of electronic states that are based on the peculiar properties of SrTiO3.
Please note that this Focus Session comprises four parts: Posters are presented within the TT poster session TT58, Wed 15:00-18:00, poster area E. Invited talks are compiled in the session TT62 (Thursday, 9:30 to 12:45, H0104), Contributed talks will be presented in sessions TT72 (Thursday 15:00-18:00, H0104) and TT83 (Fri 9:30-12:30, H0104).
Organizers: Rossitza Pentcheva, University of Duisburg-Essen, Marc Scheffler, University of Stuttgart
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15:00 | TT 58.1 | Optical conductivity of superconducting Nb:SrTiO3 in magnetic fields at GHz frequencies — •Cenk Beydeda, Markus Thiemann, Martin Dressel, Hans Boschker, Jochen Mannhart, and Marc Scheffler |
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15:00 | TT 58.2 | Ultrafast second harmonic generation spectroscopy of SrTiO3 surfaces and interfaces — Mahendra Kabbinahithlu, Newsha Vesalimahmoud, Tobias Lojewski, Ping Zhou, Katharina Ollefs, and •Andrea Eschenlohr |
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15:00 | TT 58.3 | Low-temperature GHz response of quantum paraelectrics SrTiO3 and KTaO3 — Vincent T. Engl, Nikolaj G. Ebensperger, Cenk Beydeda, Lars Wendel, Marius Tochtermann, Ilenia Neureuther, Ishan Sarvaiya, Martin Dressel, and •Marc Scheffler |
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15:00 | TT 58.4 | ferromagnetic two-dimensional electron gas in oxide interfaces — •Yu Chen, Maria D’Antuono, Martando Rath, Cinthia Piamonteze, Daniele Preziosi, Benoit Jouault, Daniela Stornaiuolo, and Marco Salluzzo |
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15:00 | TT 58.5 | Role of excitonic effects in optical and x-ray absorption spectroscopy of SrTiO3: insights from a combined first principles and many-body theory approach — •V. Begum-Hudde, M. E. Gruner, and R. Pentcheva |
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15:00 | TT 58.6 | Boosting the Edelstein effect of two-dimensional electron gases by ferromagnetic exchange — •Gabriel Lazrak, Annika Johansson, Börge Göbel, Ingrid Mertig, Agnès Barthélémy, and Manuel Bibès |
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15:00 | TT 58.7 | Impact of a Si(001) substrate on the electronic reconstruction and two-dimensional electron gas formation at LaTiO3/SrTiO3(001) — •Andri Darmawan and Rossitza Pentcheva |
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15:00 | TT 58.8 | Experimental signatures of gate tunable superconductivity in Al/STO heterostructures — •Jaydean Schmidt, Matthias Kronseder, Nicola Paradiso, and Christoph Strunk |