Berlin 2024 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 101: Focus Session: SrTiO3: A Versatile Material from Bulk Quantum Paraelectric to 2D Superconductor III (joint session TT/KFM/MA/O)
Freitag, 22. März 2024, 09:30–12:30, 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
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09:30 | O 101.1 | High-mobility two-dimensional electron gases based on strain engineered ferroelectric SrTiO3 thin films — •Ruchi Tomar, Tatiana Kuznetsova, Srijani Mallik, Luis M. Vicente-Arche, Fernando Gallego, Maximilien Cazayous, Roman Engel-Herbert, and Manuel Bibes |
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09:45 | O 101.2 | Two-dimensional electron liquids at truly bulk-terminated SrTiO3 — •Igor Sokolović, Eduardo B. Guedes, Thomas van Waas, Samuel Poncé, Craig M. Polley, Michael Schmid, Ulrike Diebold, Milan Radović, Martin Setvín, and J. Hugo Dil |
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10:00 | O 101.3 | Low-energy excitations at SrTiO3(001) surfaces in absence and presence of a two-dimensional electron gas — •Hannes Herrmann, Anne Oelschläger, and Wolf Widdra |
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10:15 | O 101.4 | Confined ionic-electronic systems based on SrTiO3 — •Felix Gunkel, Marcus Wohlgemuth, Moritz L. Weber, and Regina Dittmann |
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10:30 | O 101.5 | Origin of spin-polarized 2DEG at the EuTiO3(001) surface and LaAlO3/EuTiO3/SrTiO3(001) interface — •Manish Verma and Rossitza Pentcheva |
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10:45 | O 101.6 | A multiferroic STO-based 2D-electron gas — •Marco Salluzzo, Yu Chen, Martando Rath, Daniela Stornaiuolo, Julien Brehin, Manuel Bibes, Julien Varignon, and Cinthia Piamonteze |
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11:00 | O 101.7 | Magnetotransport properties of a spin polarized STO-based 2D electron system tuned by visible light — Maria D’Antuono, Yu Chen, Roberta Caruso, Benoit Jouault, Marco Salluzzo, and •Daniela Stornaiuolo |
| 11:15 | 15 min. break | ||
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11:30 | O 101.8 | All-electrical measurement of the spin-charge conversion effect in nanodevices based on SrTiO3 two-dimensional electron gases — •Fernando Gallego, Felix Trier, Srijani Mallik, Julien Brehin, Sara Varotto, Luis Moreno, Tanay Gosavy, Chia-Ching Lin, Jean-René Coudevylle, Lucía Iglesias, Fèlix Casanova, Ian Young, Laurent Vila, Jean-Philippe Attané, and Manuel Bibes |
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11:45 | O 101.9 | Effect of confinement and coulomb interactions on the electronic structure of the (111) LaAlO3/SrTiO3 interface — •Mattia Trama, Vittorio Cataudella, Carmine Antonio Perroni, Francesco Romeo, and Roberta Citro |
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12:00 | O 101.10 | Enhanced Non-linear Response by Manipulating the Dirac Point in the (111) LaTiO3/SrTiO3 Interface — •Yoram Dagan, Gal Tuvia, Amir Burshtein, Itai Silber, Amnon Aharony, Ora Entin-Wohlman, and Moshe Goldstein |
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12:15 | O 101.11 | Tunable 2D Electron- and 2D Hole States Observed at Fe/SrTiO3 Interfaces — •Pia Maria Düring, Paul Rosenberger, Lutz Baumgarten, Fatima Alarab, Frank Lechermann, Vladimir N. Strocov, and Martina Müller |