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  Time-reversal-breaking topological phases in antiferromagnetic Sr2FeOsO6 films

Dong, X.-Y., Kanungo, S., Yan, B., & Liu, C.-X. (2016). Time-reversal-breaking topological phases in antiferromagnetic Sr2FeOsO6 films. Physical Review B, 94(24): 245135, pp. 1-9. doi:10.1103/PhysRevB.94.245135.

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 Creators:
Dong, Xiao-Yu1, Author
Kanungo, Sudipta2, Author           
Yan, Binghai3, Author           
Liu, Chao-Xing1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863404              
3Binghai Yan, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863427              

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 Abstract: In this work, we studied time-reversal-breaking topological phases as a result of the interplay between antiferromagnetism and inverted band structures in antiferromagnetic double perovskite transition-metal Sr2FeOsO6 films. By combining the first-principles calculations and analytical models, we demonstrate that the quantum anomalous Hall phase and chiral topological superconducting phase can be realized in this system. We find that to achieve time-reversal-breaking topological phases in antiferromagnetic materials, it is essential to break the combined symmetry of time reversal and inversion, which generally exists in antiferromagnetic structures. As a result, we can utilize an external electric gate voltage to induce the phase transition between topological phases and trivial phases, thus providing an electrically controllable topological platform for future transport experiments.

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Language(s): eng - English
 Dates: 2016-12-272016-12-27
 Publication Status: Issued
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Title: Physical Review B
  Abbreviation : Phys. Rev. B
Source Genre: Journal
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Publ. Info: Woodbury, NY : American Physical Society
Pages: - Volume / Issue: 94 (24) Sequence Number: 245135 Start / End Page: 1 - 9 Identifier: ISSN: 1098-0121
CoNE: https://pure.mpg.de/cone/journals/resource/954925225008