Atomistic-continuum multiscale modelling of magnetisation dynamics at non-zero temperature
For researchers in computational magnetism, this paper reviews known limitations of existing multiscale techniques without proposing new solutions.
The paper discusses challenges in multiscale modeling of magnetic materials at finite temperatures, focusing on partitioned domain and upscaling methods, and identifies capturing accurate magnetization length as a key difficulty.
In this article, a few problems related to multiscale modelling of magnetic materials at finite temperatures and possible ways of solving these problems are discussed. The discussion is mainly centred around two established multiscale concepts: the partitioned domain and the upscaling-based methodologies. The major challenge for both multiscale methods is to capture the correct value of magnetisation length accurately, which is affected by a random temperature-dependent force. Moreover, general limitations of these multiscale techniques in application to spin systems are discussed.