|
Calendar of Physics Talks Vienna
| Nitrogen Magneto-ionics for Data Security and Low-power Computing |
| Speaker: | Jordi Sort (ICREA Professor, Physics Department, Autonomous University of Barcelona, Spain) |
| Abstract: | Magneto-ionics –voltage-driven modulation of magnetic properties via electric-field-induced ion transport– offers a pathway toward low-power, analog magnetic memories and computing. Extending beyond conventional oxygen or lithium systems, this work introduces nitrogen magneto-ionics, where nitrogen ions migrate in transition metal nitrides (e.g., CoN, FeN, CoMnN, FeCoN) at room temperature using liquid or solid electrolytes [1–6]. These materials display tunable ferromagnetic, paramagnetic, and antiferromagnetic phases governed by alloy composition and nitrogen content [4]. Unlike oxygen-based systems, nitrogen transport proceeds through a uniform plane-wave-like front, favorable for multilayer memory architectures. We demonstrate voltage-driven magnetic switching with good reversibility, as well as neuromorphic behaviors such as synaptic potentiation/depression, and spike-timing-depende |
| Date: | Tue, 09.12.2025 |
| Time: | 16:00 |
| Location: | TU Wien, Institut für Angewandte Physik, E134 1040 Wien, Wiedner Hauptstraße 8-10 Yellow Tower „B“, 5th floor, SEM.R. DB gelb 05 B |
| Contact: | Prof. A. Fernández-Pacheco |
| Understanding, controlling and creating many-body systems atom by atom |
| Speaker: | Johannes Zeiher (LMU and Planq ) |
| Abstract: | Microscopic control and readout of individual quanta has been one of the driving forces behind advances in quantum science and technology in recent years, leading to spectacular breakthroughs across quantum simulation, quantum computing, quantum optics, and quantum metrology.
In my talk, I will present recent results on quantum-gas microscopy of many-body systems both in and out of equilibrium. In particular, I will discuss an experiment demonstrating strongly constrained out-of-equilibrium transport and the emergence of Hilbert space fragmentation in two-dimensional tilted Hubbard systems. In the second part of my talk, I will introduce a novel hybrid experimental platform based on the alkaline-earth atom strontium. By directly loading thousands of individually addressable atoms from a magneto-optical trap into an optical lattice, we achieve high-fidelity, low-loss imaging and iterativ |
| Date: | Fri, 12.12.2025 |
| Time: | 10:00 |
| Duration: | 45 min |
| Location: | Helmut Rauch Hörsaal ATI |
| Contact: | Jörg Schmiedmayer |
|