The growing interest in studying micro and nanostructured magnetic systems with potential applications in spintronics or spin electronics has led to the creation of various research lines related to the study and understanding of magnetization dynamics. Understanding the mechanisms that allow controlling the magnetization of a system using spin-polarized currents and, in turn, generating spin currents through magnetization excitation opens up a huge range of possibilities for the development of electronic devices with new functionalities. Some examples, such as the fabrication of new types of storage memories and electronic devices with low power dissipation, are just a few of the applications that have been explored in recent years. From a basic physics perspective, the phenomena that lead to these applications are scarcely studied in various laboratories in the country. The overall objective of the proposal involves the continuation and consolidation of the recent research line of the Magnetic Resonances Division (DRM) of the Bariloche Atomic Center, which studies the magnetic properties and spin-polarized electronic transport of magnetic microstructures. This objective will expand the scope of basic research topics and experimental techniques related to the study of new phenomena in the field of spintronics. To strengthen this line of work, the study of magnetism and spin-dependent electronic transport phenomena in low-dimensional systems is proposed. The tasks to be carried out in the project are aimed at contributing to the understanding of phenomena in three-dimensional systems to encompass the study of basic physics and potential applications related to the generation of spin currents, charge currents, and their manipulation. The DISCO proposal will focus on the study of different mechanisms for spin current control and will contribute to the understanding of magnetization dynamics in ferromagnetic-metal and synthetic antiferromagnetic-metal systems. The goal is to contribute to the implementation of a new experimental technique that will quantify the efficiency of current conversion phenomena (from spin to charge): spin torque-ferromagnetic resonance.
Lucas Brugevin, student of Physics at Instituto Balseiro presenting the first results of the projects DISCO (PICT 2021-00113 project) and MAGNETS (Conicet under Grant PIBAA Nro. 28720210100099C). The work report the optimization process of the microstructured devices (CPW and microsized-ferromagnetic/metallic layers) for the spin-torque ferromagnetic resonance characterization.
More results are coming soon! Stay tuned :)
Poster can be downloaded from this link