Welcome to LMGN
The Laboratory of Nanoscale Magnetic Materials and Magnonics (LMGN) explores magnetic nanomaterials for applications in information technology (data processing, transmission, logic), sensing and multifunctional devices. We prepare and investigate individual ferromagnetic nanostructures such as nanotubes, periodic and aperiodic nanomagnet arrangements such as magnonic crystals, artificial spin ice and quasicrystals as well as skyrmion lattices. We study their fundamental properties and search for novel functionalities.
By our experiments and simulations, we aim at obtaining a microscopic understanding about how to master collective spin excitations at the nanoscale. The focus is devoted to microwave properties covering the frequency regime from about 1 GHz to a few 100 GHz. Here, electromagnetic waves that, in free space, exhibit a wavelength of several centimeters can be coupled to the microscopic magnetic moments, thereby inducing spin-precessional motion (spin waves). The wave-like excitation can obey a wavelength of a few 10 nanometers and below. Miniaturized microwave components are hence possible.
The research field magnonics now aims at data processing and transmission using spin waves in nanoengineered magnetic circuits. The main challenges in the research field are as follows:
- rmagnetic materials offering the lowest possible signal losses
- development of a nanotechnolgy for 3D device architectures
- microwave-to-spin wave transducers for wavelengths below 100 nm
- interfacing with existing nanoelectronics
- reprogrammable magnetic metamaterials