The core mission of this project is to connect microscopic thermo-spin conversion principles—which, to date, have only been available at the nanoscale—to the macroscopic material properties. To transcend the barriers separating the macroscopic and microscopic worlds, we combine methods for controlling phase interfaces with multiscale materials-science techniques based on cutting-edge insights into spin caloritronics—a field that was previously restricted to proof-of-concept experiments and exploration of individual functionalities, but is now in the process of being revolutionized by the results of our research.