• Corpus ID: 249282672

Axion mass in magnetic topological insulators

  title={Axion mass in magnetic topological insulators},
  author={Koji Ishiwata},
We study axion in 3D topological insulators with magnetic impurities under finite temperature. We find stable antiferromagnetic ground state and ferromagnetic metastable state. In both magnetic states, the mass of axion is found to be up to eV scale and it approaches to zero near the phase boundary of the magnetic state. This result applies to both normal and topological insulator phases. 

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