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

Research output

Abstract

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
Volume129
Issue number3
Publication statusE-pub ahead of print - 21 Oct 2019

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photoelectric emission
insulators
magnetic properties
electronics
spectroscopy
magnetic measurement
Hall effect
fermions
hysteresis
electronic structure
temperature

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@article{3372d58b6e6742398c840b23939654a6,
title = "Magnetic and Electronic Properties of Gd-Doped Topological Insulator Bi1.09Gd0.06Sb0.85Te3",
abstract = "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.",
keywords = "Antimony compounds, Bismuth compounds, Electric currents, Electric insulators, electronic properties, Magnetic structure, Magnetometry, photoelectron spectroscopy, Quantum Hall effect, Tellurium compounds, Topological insulators",
author = "S.O. Filnov and Yu.A. Surnin and A.V. Koroleva and I.I. Klimovskikh and D.A. Estyunin and Varykhalov, {A. Yu.} and K.A. Bokai and K.A. Kokh and O.E. Tereshchenko and V.A. Golyashov and E.V. Shevchenko and A.V. Shikin",
note = "Filnov, S.O., Surnin, Y.A., Koroleva, A.V. et al. J. Exp. Theor. Phys. (2019) 129: 404. https://doi.org/10.1134/S106377611908003X",
year = "2019",
month = "10",
day = "21",
language = "English",
volume = "129",
pages = "404–412",
journal = "Journal of Experimental and Theoretical Physics",
issn = "1063-7761",
publisher = "МАИК {"}Наука/Интерпериодика{"}",
number = "3",

}

TY - JOUR

T1 - Magnetic and Electronic Properties of Gd-Doped Topological Insulator Bi1.09Gd0.06Sb0.85Te3

AU - Filnov, S.O.

AU - Surnin, Yu.A.

AU - Koroleva, A.V.

AU - Klimovskikh, I.I.

AU - Estyunin, D.A.

AU - Varykhalov, A. Yu.

AU - Bokai, K.A.

AU - Kokh, K.A.

AU - Tereshchenko, O.E.

AU - Golyashov, V.A.

AU - Shevchenko, E.V.

AU - Shikin, A.V.

N1 - Filnov, S.O., Surnin, Y.A., Koroleva, A.V. et al. J. Exp. Theor. Phys. (2019) 129: 404. https://doi.org/10.1134/S106377611908003X

PY - 2019/10/21

Y1 - 2019/10/21

N2 - 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.

AB - 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.

KW - Antimony compounds

KW - Bismuth compounds

KW - Electric currents

KW - Electric insulators

KW - electronic properties

KW - Magnetic structure

KW - Magnetometry

KW - photoelectron spectroscopy

KW - Quantum Hall effect

KW - Tellurium compounds

KW - Topological insulators

M3 - Article

VL - 129

SP - 404

EP - 412

JO - Journal of Experimental and Theoretical Physics

JF - Journal of Experimental and Theoretical Physics

SN - 1063-7761

IS - 3

ER -