Unveiling Altermagnets: Experimental Evidence and Spin-Symmetry Characteristics
Since 2020, a new branch of magnetic materials, altermagnets, has been theoretically identified, in addition to the conventional ferromagnets and antiferromagnets. The exclusively distinct spin-symmetry characteristics of altermagnets are the opposite-spin sublattices connected by a real-space rotation, but not connected by a translation or inversion. Such symmetry has unconventional physical consequences.
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