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Canonical magnetic insulators with isotropic magnetoelectric coupling
Physical Review B
We have performed an exhaustive representation-theory-based search for the simplest structures allowing isotropic magnetoelectric coupling. We find 30 such structures, all sharing a common pattern of atomic displacements in the direction of atomic magnetic moments. We focus on one of these 30 canonical structures and find that it is generically realized in a class of fractionally substituted pyrochlore compounds with an all-in-all-out magnetic order. Furthermore, we find that these substituteddoi:10.1103/physrevb.88.121106 fatcat:23yhp2uj4fe3thv2256mv7f6wq