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Calendar of Physics Talks Vienna
| Exploring nanomagnetism within the transmission electron microscope |
| Speaker: | Daniel Wolf (Institute for Solid State Research, Leibniz Institute for Solid State and Materials Research Dresden, Dresden, Germany) |
| Abstract: | We use transmission electron microscopy (TEM)–based magnetic imaging to investigate magnetic nanostructures in two and three dimensions. [1] The method exploits the fundamental Aharonov–Bohm phase shift that arises when the transmitting electron wave interacts with both the specimen’s electrostatic potential and its magnetic vector potential. This magnetic phase shift can be employed in Lorentz TEM and off‑axis electron holography to map domain configurations (e.g., versus applied field), magnetic textures such as skyrmion lattices, and exotic domain walls like Bloch‑point walls in nanowires. In my talk, I will introduce the fundamentals of magnetic imaging, review the available methods, and address the challenges of acquiring and reconstructing three‑dimensional datasets with nanometer resolution. [2] Finally, I will showcase examples that illustrate how magnetic imaging can visualize S |
| Date: | Tue, 28.04.2026 |
| 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. Dr.Amalio Fernandez-Pacheco |
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