A SOC-enabled uniaxial spin space-group quasi-symmetry determines whether the weak ferromagnetic moment induced in altermagnets is linear, quadratic, or cubic in spin-orbit coupling, explaining the material-dependent amplitude of the FM moment.
Quantum metric nonlinear Hall ef- fect in a topological antiferromagnetic heterostructure,
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Quasi-symmetry Constrained Spin Ferromagnetism in Altermagnets
A SOC-enabled uniaxial spin space-group quasi-symmetry determines whether the weak ferromagnetic moment induced in altermagnets is linear, quadratic, or cubic in spin-orbit coupling, explaining the material-dependent amplitude of the FM moment.