JETP Letters

, Volume 105, Issue 5, pp 297–302 | Cite as

Magnetic extension as an efficient method for realizing the quantum anomalous hall state in topological insulators

  • M. M. Otrokov
  • T. V. MenshchikovaEmail author
  • I. P. Rusinov
  • M. G. Vergniory
  • V. M. Kuznetsov
  • E. V. Chulkov
Condensed Matter


A new efficient method is proposed for inducing magnetism on the surface of a topological insulator through the deposition of a thin film of an isostructural magnetic insulator whose atomic composition is maximally close to that of the topological material. Such a design prevents the formation of a strong interface potential between subsystems. As a result, the topological state freely penetrates into the magnetic region, where it interacts with the exchange field and gets significantly split at the Dirac point. It is shown that the application of this approach to thin films of a tetradymite-like topological insulator allows realizing the quantum anomalous Hall state with a band gap of several tens of meV.


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Copyright information

© Pleiades Publishing, Inc. 2017

Authors and Affiliations

  • M. M. Otrokov
    • 1
    • 2
  • T. V. Menshchikova
    • 1
    Email author
  • I. P. Rusinov
    • 1
    • 2
  • M. G. Vergniory
    • 3
  • V. M. Kuznetsov
    • 1
  • E. V. Chulkov
    • 1
    • 2
    • 4
  1. 1.National Research Tomsk State UniversityTomskRussia
  2. 2.St. Petersburg State UniversitySt. PetersburgRussia
  3. 3.Department of Applied Physics II, Faculty of Science and TechnologyUniversity of the Basque Country UPV/EHUBilbaoSpain
  4. 4.Departamento de Física de Materiales UPV/EHUCentro de Física de Materiales CFM–MPC and Centro Mixto CSIC-UPV/EHUSan Sebastián/DonostiaSpain

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