STROBE Seminar: Dr. Thomas Feggeler, “Deciphering magnetism and its dynamics by Time-Resolved X-Ray Microscopy – a step towards magnonic data processing”
Date and Time: 11:00AM PT / 12:00PM MT / 2:00PM ET, Thursday, September 8, 2022
Title: Deciphering magnetism and its dynamics by Time-Resolved X-Ray Microscopy – a step towards magnonic data processing
Presenter: Dr. Thomas Feggeler, Postdoctoral Researcher, Lawrence Berkeley National Laboratory and University of California Berkeley (Falcone research group)
Abstract: Contemporary information and communication technology (ICT) reaches more and more its limits with respect to power consumption and heat dissipation with ICT already consuming about 7 % of global energy. Already several decades ago, the use of the magnetic spin as information unit has been suggested to overcome these limits, offering a path to low-power data processing. Time-Resolved X-ray Microscopy is a valuable addition to the common spectromicroscopy techniques used in the research and design process of spintronics and magnonics, allowing the element-specific and spatially resolved characterization of dynamic magnetic properties of materials and logic designs on the sub-30 nm scale. In my talk I’m going to introduce Time-resolved Scanning Transmission X-ray Microscopy and its application in studying magnonics in addition to Ferromagnetic Resonance spectroscopy and Micromagnetic simulations. In addition, I will present a concept of a Magnonic Cellular Nonlinear Network as an approach for massively parallel magnonic processing.
Presenter Bio: Thomas Feggeler received his PhD in 2020 from University of Duisburg-Essen as part of the internationally funded research project “Element specific spin dynamics of nano- and heterostructures studied with ultimate spatial resolution”. He was hired directly afterwards as postdoctoral researcher by Lawrence Berkeley National Laboratory where his work focuses on developing a new Time-Resolved Scanning Transmission X-ray Microscope at the Advanced Light Source end station 11.0.2.2. His research focuses on the element-specific characterization magnetization and its dynamics in artificially and biologically synthesized nanoscaled structures for spintronics and magnonics.