To the Intrinsic Magnetism of the Bi1.08Sn0.02Sb0.9Te2S Topological Insulator

  • V. Sakhin
  • E. Kukovitsky
  • A. Kiiamov
  • R. Khasanov
  • Yu. Talanov
  • G. Teitel’baumEmail author


Using Electron Spin Resonance spectroscopy together with the Superconducting Quantum Interference Device magnetometry we found that the intrinsic magnetic moments, originating from the nonmagnetic structural defects of Bi1.08Sn0.02Sb0.9Te2S topological insulator form the superparamagnetic state. It represents an array of nanoscale single domain ferromagnets randomly distributed in the nonmagnetic meda. Their net magnetic polarization in the absence of external magnetic field is completely averaged out. Single domain ferromagnetic particles at elevated temperatures behave magnetically in a manner analogous to the Langevin paramagnetism of moment bearing atoms. The main distinction is that the moment of the particle may be 102−103 times the atomic moment.


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© Pleiades Publishing, Inc. 2019

Authors and Affiliations

  • V. Sakhin
    • 1
  • E. Kukovitsky
    • 1
  • A. Kiiamov
    • 2
  • R. Khasanov
    • 3
  • Yu. Talanov
    • 1
  • G. Teitel’baum
    • 1
    Email author
  1. 1.Kazan E.K. Zavoisky Physical-Technical Institute of Russian Academy of SciencesKazanRussia
  2. 2.Institute of PhysicsKazan Federal UniversityKazanRussia
  3. 3.Paul Scherrer InstituteVilligenSwitzerland

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