Magnetic Digital Twins for Spintronics : nanoscale simulation platform – DIWINA

The DiWiNa project aims at developing a unified open-access platform for spintronic numerical twins, ie, codes for micromagnetic/spintronic simulations with sufficiently-high reliability and speed so that they can be trusted and used as reality. The simulations will be bridged to the advanced microcopy techniques used by the community, through plugins to convert the statics or time-resolved 3D vector-fields into contrast maps for the various techniques, including their experimental transfer functions. To achieve this, we bring together experts from different disciplines to address the various challenges: spintronics for the core simulations, mathematics for trust, algorithmics for speed, experimentalists for the bridge with microscopy. Practical work consists of checking the time-integration stability of spintronic torque involved in the dynamics when implemented in the versatile finite-element framework, improve the calculation speed through advanced libraries, build the bridge with microscopies through rendering tools, and encapsulate these three key ingredients into a user-friendly Python ecosystem. Through open-access and versatile user-friendly encapsulation, we expect that this platform is suited to serve the needs of the entire physics and engineering community of spintronics. The platform will be unique in its features, ranging from simulation to the direct and practical comparison with experiments. It will contribute to reduce considerably the number of experimental screening for the faster development of new spintronic devices, which are expected to play a key role in energy saving.