Magnetic and Electronic Properties of Gd-Doped Topological Insulator Bi1.09Gd0.06Sb0.85Te3

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The recent realization of quantum anomalous Hall effect and Majorana fermions observation enhance interest in magnetism investigation in topological insulators. In this work, the electronic and magnetic structure of the Gd-doped topological insulator Bi1.09Gd0.06Sb0.85Te3 were systematically studied by means of angle-resolved photoemission spectroscopy, resonance photoemission spectroscopy (ResPES) and SQUID magnetometry. Resonant features related to the Gd density of states near the Fermi level are experimentally observed. Study of magnetic structure showed antiferromagnetic ordered bulk at low temperatures as well as presence of hysteresis loop at elevated temperatures. Finally, possible mechanism of magnetism and its relation to observed electronic features are discussed.
Original languageEnglish
Pages (from-to)404–412
JournalJournal of Experimental and Theoretical Physics
Issue number3
StateE-pub ahead of print - 21 Oct 2019


  • Antimony compounds
  • Bismuth compounds
  • Electric currents
  • Electric insulators
  • electronic properties
  • Magnetic structure
  • Magnetometry
  • photoelectron spectroscopy
  • Quantum Hall effect
  • Tellurium compounds
  • Topological insulators

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