A centrosymmetric antiferromagnet with bulk magnetic octupoles acquires a multiferroic surface with net magnetization, electric dipole, and linear magnetoelectric response, demonstrated for FeF2.
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Emergent surface multiferroicity
A centrosymmetric antiferromagnet with bulk magnetic octupoles acquires a multiferroic surface with net magnetization, electric dipole, and linear magnetoelectric response, demonstrated for FeF2.