Altermagnetic Néel order generates locked electric polarization in type-II multiferroics, with a microscopic mechanism, eight symmetry categories for 2D cases, and a first-principles example in monolayer MgFe2N2.
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Altermagnetic type-II Multiferroics with N\'{e}el-order-locked Electric Polarization
Altermagnetic Néel order generates locked electric polarization in type-II multiferroics, with a microscopic mechanism, eight symmetry categories for 2D cases, and a first-principles example in monolayer MgFe2N2.