Antiferromagnetic topological insulators

  title={Antiferromagnetic topological insulators},
  author={Roger S. K. Mong and Andrew M. Essin and Joel E Moore},
We consider antiferromagnets breaking both time-reversal and a primitive-lattice translational symmetry T1/2 of a crystal but preserving the combination S= T1/2. The S symmetry leads to a Z2 topological classification of insulators, separating the ordinary insulator phase from the “antiferromagnetic topological insulator” phase. This state is similar to the “strong” topological insulator with time-reversal symmetry and shares with it such properties as a quantized magnetoelectric effect… CONTINUE READING
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