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

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 Bi 1.09 Gd 0.06 Sb 0.85 Te 3 were systematically...

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Veröffentlicht in:Journal of experimental and theoretical physics 2019-09, Vol.129 (3), p.404-412
Hauptverfasser: Filnov, S. O., Surnin, Yu. A., Koroleva, A. V., Klimovskikh, I. I., Estyunin, D. A., Varykhalov, A. Yu, Bokai, K. A., Kokh, K. A., Tereshchenko, O. E., Golyashov, V. A., Shevchenko, E. V., Shikin, A. M.
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container_issue 3
container_start_page 404
container_title Journal of experimental and theoretical physics
container_volume 129
creator Filnov, S. O.
Surnin, Yu. A.
Koroleva, A. V.
Klimovskikh, I. I.
Estyunin, D. A.
Varykhalov, A. Yu
Bokai, K. A.
Kokh, K. A.
Tereshchenko, O. E.
Golyashov, V. A.
Shevchenko, E. V.
Shikin, A. M.
description 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 Bi 1.09 Gd 0.06 Sb 0.85 Te 3 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.
doi_str_mv 10.1134/S106377611908003X
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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. 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subjects Antiferromagnetism
Classical and Quantum Gravitation
Disorder
Elementary Particles
Fermions
Gadolinium
High temperature
Hysteresis loops
Magnetic measurement
Magnetic properties
Magnetic structure
Magnetism
Order
Particle and Nuclear Physics
Phase Transition in Condensed System
Photoelectric emission
Photoelectron spectroscopy
Physics
Physics and Astronomy
Quantum Field Theory
Quantum Hall effect
Relativity Theory
Solid State Physics
Spectrum analysis
Superconducting quantum interference devices
Topological insulators
Topology
title Magnetic and Electronic Properties of Gd-Doped Topological Insulator Bi1.09Gd0.06Sb0.85Te3
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