## Tailoring tricolor structure of magnetic topological insulator for robust axion insulator

- Masataka Mogi, Minoru Kawamura, +4 authors Yoshinori Tokura
- Science Advances
- 2017

- Published 2017 in Nature communications
DOI:10.1038/ncomms15197

The electrodynamics of topological insulators (TIs) is described by modified Maxwell's equations, which contain additional terms that couple an electric field to a magnetization and a magnetic field to a polarization of the medium, such that the coupling coefficient is quantized in odd multiples of α/4π per surface. Here we report on the observation of this… CONTINUE READING

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