Seminar TRR80

17.10.2017 4 p.m., room: S-288
Prof. Dr. Arthur Ernst (Johannes Kepler Universität Linz, Österreich)
Exchange interaction in magnetic topological insulators and related materials
21.11.2017 4 p.m., room: S-288
Dr. Axel Lubk (IFW Dresden)
Advanced Holographic Tomography for 3D Magnetic Imaging in Magnetic Textures
5.12.2017 4 p.m., room: S-288
Prof. Dr. Martino Poggio (Department of Physics, University of Basel)
Nanomechanics and Nanomagnetism

I will discuss recent experiments in our group aimed at determining the magnetization configuration and reversal processes in nanometer-scale magnets. First, I will discuss sensitive measurements of torque magnetometry and how they can be used to observe magnetization reversal and magnetic phase transitions in individual nanomagnets. I will then discuss the advantages of scaling down mechanical torque transducers from conventional ‘top-down’ cantilever sensors to state-of-the-art ‘bottom-up’ structures. In particular, I will show torque magnetometry experiments using nanowire (NW) structures. Finally, I will introduce our scanning probe experiments aimed at imaging magnetism on the nanometer-scale. In this context, I will discuss experiments using a scanning nanometer-scale superconducting quantum interference device (SQUID) to map the stray magnetic field produced by individual nanomagnets.

16.1.2018 4 p.m., room: S-288
Prof. Dr. Markus Grüninger (II. Physikalisches Institut, Universität zu Köln)
RIXS on face-sharing iridates: From j=1/2 to quasi-molecular orbitals