Êtes-vous un étudiant de l'EPFL à la recherche d'un projet de semestre?
Travaillez avec nous sur des projets en science des données et en visualisation, et déployez votre projet sous forme d'application sur Graph Search.
We use density-functional theory to study the ordered states of iridium manganese, demonstrating a simple but powerful method for describing magnetic structures and the transitions among them. As an illustrative example, the coupling of magnetism and crystal structure in IrMn is examined through a rigorous exploration of strain space. We then generate order parameters for the ground-state magnetic structures, providing a comprehensive framework for understanding antiferromagnetic variants and their magnetic anisotropy. In particular, we show how the most direct path between two variant structures can be analytically determined; this technique is used to equate two seemingly contradictory prior studies.