Maxim Mostovoy

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Altermagnets have recently emerged as a new class of magnetic materials sharing properties of both antiferromagnets and ferromagnets. Despite very small net magnetization, they exhibit phenomena typically associated with ferromagnetism, such as the Faraday, Kerr and Anomalous Hall effects, resulting from the relativistic spin-orbit coupling, as well as the spin splitting of electron bands and Spin Hall Effect of non-relativistic origin. Spin space groups and magnetic multipoles are used to explain the properties of altermagnets. I will provide a pedagogical introduction to a symmetry analysis of altermagnets using an antiferromagnetic order parameter [1]. This time-honored approach applies to all physical phenomena observed in these materials. In particular, I will discuss symmetry of altermagnets with non-collinear and non-coplanar spin orders.

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University of Groningen
PH2
Contact: Paul van Loosdrecht