A crisscross antiferromagnetic lattice with 4'/m' symmetry realizes 2D and 3D higher-order topological insulators with quantized quadrupole moments, corner states, and chiral hinge states.
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Higher-order topological insulators in a crisscross antiferromagnetic model
A crisscross antiferromagnetic lattice with 4'/m' symmetry realizes 2D and 3D higher-order topological insulators with quantized quadrupole moments, corner states, and chiral hinge states.