Berlin 2024 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 97: Focus Session: SrTiO3: A Versatile Material from Bulk Quantum Paraelectric to 2D Superconductor II (joint session TT/KFM/MA/O)
Donnerstag, 21. März 2024, 15:00–18:00, H 0104
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
| 15:00 | O 97.1 | The contribution has been withdrawn. | |
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15:15 | O 97.2 | Dilute superconductivity in the vicinity of a ferroelectric quantum critical point coupled via the "vector coupling": The case of SrTiO3 — •Sudip Kumar Saha, Avraham Klein, Jonathan Ruhman, and Maria Navarro Gastiasoro |
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15:30 | O 97.3 | Dislocation-based filamentary superconductivity in reduced SrTiO3 — •Christian Rodenbücher, Gustav Bihlmayer, Carsten Korte, and Kristof Szot |
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15:45 | O 97.4 | Dislocation-Induced Photoconductivity Enhancement in Fe-Doped SrTiO3: compensation of low mobility by high carrier density through the emergence of a sub-band gap level — •mehrzad soleimany, till frömling, jürgen rödel, and marin alexe |
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16:00 | O 97.5 | IR and THz studies on (Ba0.45Sr0.55TiO3)24Ba0.45Sr0.55O and (Ba0.45Sr0.55TiO3)8Ba0.45Sr0.55O thin films — Veronica Goian, Matthew Barone, Natalie Dawley, Christelle Kadlec, •Darrell Schlom, and Stanislav Kamba |
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16:15 | O 97.6 | Polar phonon behaviour in polycrystalline Bi-doped strontium titanate thin films — •Oleksandr Tkach, Olena Okhay, Dmitry Nuzhnyy, Jan Petzelt, and Paula M. Vilarinho |
| 16:30 | 15 min. break | ||
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16:45 | O 97.7 | Emergence of strain-Induced magnetism in plastically-deformed SrTiO3 at low temperature — •Anirban Kundu, Xi Wang, Avraham Klein, and Beena Kalisky |
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17:00 | O 97.8 | Mobility in SrTiO3 Mediated by Machine Learning Predicted Anharmonic Phonons — •Luigi Ranalli, Carla Verdi, and Cesare Franchini |
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17:15 | O 97.9 | Machine-learning-backed evolutionary exploration of the SrTiO3(110) surface phase diagram — •Ralf Wanzenböck, Florian Buchner, Michele Riva, Jesús Carrete, and Georg K. H. Madsen |
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17:30 | O 97.10 | Quasiparticle and excitonic properties of monolayer SrTiO3 — •Lorenzo Varrassi, Peitao Liu, and Cesare Franchini |
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17:45 | O 97.11 | SrTiO3: Thoroughly investigated but still good for surprises — •Annette Bussmann-Holder, Reinhard K. Kremer, Krystian Roleder, and Ekhard K. H. Salje |