Nature Physics, Published online: 30 January 2025; doi:10.1038/s41567-024-02750-3
Recent advances in classifying magnets according to spin-group symmetry have expanded the possibilities of unconventional magnetism. Unconventional magnets — such as collinear spin-split antiferromagnets, also known as altermagnets, noncollinear spin-split antiferromagnets and anomalous-Hall antiferromagnets — combine the advantages of ferromagnetism and antiferromagnetism.
