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TT: Fachverband Tiefe Temperaturen

TT 62: Focus Session: SrTiO₃: A Versatile Material from Bulk Quantum Paraelectric to 2D Superconductor I (joint session TT/KFM/MA/O)

Thursday, March 21, 2024, 09:30–12:45, 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

	09:30	TT 62.1	Invited Talk: Ferroelectricity and Superconductivity in SrTiO3 — •Susanne Stemmer
	10:00	TT 62.2	Invited Talk: Dilute superconductivity in doped strontium titanate — •Kamran Behnia
	10:30	TT 62.3	Invited Talk: Polarons and Excitons in quantum-paraelectric SrTiO3 — •Cesare Franchini
	11:00		15 min. break
	11:15	TT 62.4	Invited Talk: Controlling ferroelectrics with light — •Andrea Cavalleri
	11:45	TT 62.5	Invited Talk: Terahertz electric field driven dynamical multiferroicity in SrTiO3 — •Stefano Bonetti
	12:15	TT 62.6	The contribution has been withdrawn.
	12:30	TT 62.7	Dynamics of the critical phonon modes in quantum paraelectric SrTiO3 — •Shiyu Deng, Charles S. Haines, Matthew J. Coak, Alexandre Ivanov, Andrea Piovano, Andrew R. Wildes, and Siddharth S. Saxena