Landau Theory of Altermagnetism
Max Planck Institute for the Physics of Complex Systems · Centre National de la Recherche Scientifique · +5 more institutions
Abstract
We formulate a Landau theory for altermagnets, a class of collinear compensated magnets with spin-split bands. Starting from the nonrelativistic limit, this Landau theory goes beyond a conventional analysis by including spin-space symmetries, providing a simple framework for understanding the key features of this family of materials. We find a set of multipolar secondary order parameters connecting existing ideas about the spin symmetries of these systems, their order parameters, and the effect of nonzero spin-orbit coupling. We account for several features of canonical altermagnets such as RuO_{2}, MnTe, and CuF_{2} that go beyond symmetry alone, relating the order parameter to key observables such as…
Citation impact
- FWCI
- 42.53
- Percentile
- 100%
- References
- 71
Authors
2- PMPaul McClartyCorresponding
Max Planck Institute for the Physics of Complex Systems, Centre National de la Recherche Scientifique, Université Paris-Saclay, CEA Paris-Saclay, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Laboratoire Léon Brillouin
- JGJeffrey G. Rau
University of Windsor
Topics & keywords
- Physics
- Statistical physics
- Theoretical physics