Advanced Materials, volume 33, issue 42, pages 2102935

Mn‐Rich MnSb2Te4: A Topological Insulator with Magnetic Gap Closing at High Curie Temperatures of 45–50 K

Wimmer S ¹

Sánchez-Barriga J. ²

Küppers Philipp ³

Ney A. ¹

Schierle E. ²

Freyse F. ^{2, 4}

Caha O. ⁵

Michalicka Jan ⁶

Liebmann M ³

Primetzhofer Daniel ⁷

Hoffmann M. ⁸

Ernst A. ^{8, 9}

Otrokov Mikhail M. ^{10, 11}

Bihlmayer Gustav ¹²

Weschke E. ²

Lake Bella ²

Chulkov E.V. ^{13, 14, 15, 16}

Morgenstern M. ³

Bauer Günther ¹

Springholz G. ¹

Rader O. ²

Hide authors affiliations Show authors affiliations: 16 affiliations

Institut für Halbleiter‐ und Festkörperphysik Johannes Kepler Universität Altenberger Straße 69 Linz 4040 Austria |

Helmholtz‐Zentrum Berlin für Materialien und Energie Albert‐Einstein‐Straße 15 12489 Berlin Germany |

II. Institute of Physics B and JARA‐FIT RWTH Aachen Unversity 52074 Aachen Germany |

⁴

Institut für Physik und Astronomie Universität Potsdam Karl‐Liebknecht‐Straße 24/25 14476 Potsdam Germany |

⁵

Department of Condensed Matter Physics Masaryk University Kotlářská 267/2 Brno 61137 Czech Republic |

⁶

Central European Institute of Technology Brno University of Technology Purkyňova 123 Brno 612 00 Czech Republic |

⁷

Department of Physics and Astronomy Universitet Uppsala Lägerhyddsvägen 1 Uppsala 75120 Sweden |

⁸

Institute for Theoretical Physics Johannes Kepler Universität Altenberger Straße 69 Linz 4040 Austria |

⁹

Max Planck Institute of Microstructure Physics Weinberg 2 06120 Halle Germany |

¹⁰

IKERBASQUE Basque Foundation for Science Bilbao 48011 Spain |

¹¹

Centro de Física de Materiales (CFM‐MPC) Centro Mixto CSIC‐UPV/EHU San Sebastián/Donostia 20018 Spain |

¹²

Peter Grünberg Institut and Institute for Advanced Simulation Forschungszentrum Jülich and JARA 52425 Jülich Germany |

¹³

Tomsk State University Tomsk 634050 Russia |

¹⁴

Saint Petersburg State University Saint Petersburg 198504 Russia |

¹⁵

Departamento de Polímeros y Materiales Avanzados: Física, Química y Tecnología, Facultad de Ciencias Químicas Universidad del País Vasco UPV/EHU San Sebastián/Donostia 20080 Spain |

¹⁶

Donostia International Physics Center (DIPC) San Sebastián/Donostia 20018 Spain |

Publication type: Journal Article

Publication date: 2021-09-01

Wiley

Journal: Advanced Materials

Quartile SCImago

Quartile WOS

Impact factor: 29.4

ISSN: 09359648, 15214095

DOI: 10.1002/adma.202102935

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General Materials Science

Mechanical Engineering

Mechanics of Materials

Abstract

Ferromagnetic topological insulators exhibit the quantum anomalous Hall effect, which is potentially useful for high‐precision metrology, edge channel spintronics, and topological qubits. The stable 2+ state of Mn enables intrinsic magnetic topological insulators. MnBi2Te4 is, however, antiferromagnetic with 25 K Néel temperature and is strongly n‐doped. In this work, p‐type MnSb2Te4, previously considered topologically trivial, is shown to be a ferromagnetic topological insulator for a few percent Mn excess. i) Ferromagnetic hysteresis with record Curie temperature of 45–50 K, ii) out‐of‐plane magnetic anisotropy, iii) a 2D Dirac cone with the Dirac point close to the Fermi level, iv) out‐of‐plane spin polarization as revealed by photoelectron spectroscopy, and v) a magnetically induced bandgap closing at the Curie temperature, demonstrated by scanning tunneling spectroscopy (STS), are shown. Moreover, a critical exponent of the magnetization β ≈ 1 is found, indicating the vicinity of a quantum critical point. Ab initio calculations reveal that Mn–Sb site exchange provides the ferromagnetic interlayer coupling and the slight excess of Mn nearly doubles the Curie temperature. Remaining deviations from the ferromagnetic order open the inverted bulk bandgap and render MnSb2Te4 a robust topological insulator and new benchmark for magnetic topological insulators.

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ACS Applied Electronic Materials	ACS Applied Electronic Materials, 2, 3.17% ACS Applied Electronic Materials 2 publications, 3.17%
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Nature Reviews Physics	Nature Reviews Physics, 1, 1.59% Nature Reviews Physics 1 publication, 1.59%
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Reviews of Modern Physics	Reviews of Modern Physics, 1, 1.59% Reviews of Modern Physics 1 publication, 1.59%
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Journal of Alloys and Compounds	Journal of Alloys and Compounds, 1, 1.59% Journal of Alloys and Compounds 1 publication, 1.59%
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Russian Journal of Inorganic Chemistry	Russian Journal of Inorganic Chemistry, 1, 1.59% Russian Journal of Inorganic Chemistry 1 publication, 1.59%
Zeitschrift fur Kristallographie - Crystalline Materials	Zeitschrift fur Kristallographie - Crystalline Materials, 1, 1.59% Zeitschrift fur Kristallographie - Crystalline Materials 1 publication, 1.59%
Proceedings of the National Academy of Sciences of the United States of America	Proceedings of the National Academy of Sciences of the United States of America, 1, 1.59% Proceedings of the National Academy of Sciences of the United States of America 1 publication, 1.59%
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	1 2 3 4 5 6 7 8

Citations by publishers

	2 4 6 8 10 12 14
American Physical Society (APS)	American Physical Society (APS), 14, 22.22% American Physical Society (APS) 14 publications, 22.22%
American Chemical Society (ACS)	American Chemical Society (ACS), 11, 17.46% American Chemical Society (ACS) 11 publications, 17.46%
IOP Publishing	IOP Publishing, 8, 12.7% IOP Publishing 8 publications, 12.7%
Springer Nature	Springer Nature, 7, 11.11% Springer Nature 7 publications, 11.11%
Elsevier	Elsevier, 6, 9.52% Elsevier 6 publications, 9.52%
Wiley	Wiley, 5, 7.94% Wiley 5 publications, 7.94%
Multidisciplinary Digital Publishing Institute (MDPI)	Multidisciplinary Digital Publishing Institute (MDPI), 2, 3.17% Multidisciplinary Digital Publishing Institute (MDPI) 2 publications, 3.17%
Royal Society of Chemistry (RSC)	Royal Society of Chemistry (RSC), 2, 3.17% Royal Society of Chemistry (RSC) 2 publications, 3.17%
Pleiades Publishing	Pleiades Publishing, 1, 1.59% Pleiades Publishing 1 publication, 1.59%
Walter de Gruyter	Walter de Gruyter, 1, 1.59% Walter de Gruyter 1 publication, 1.59%
Proceedings of the National Academy of Sciences (PNAS)	Proceedings of the National Academy of Sciences (PNAS), 1, 1.59% Proceedings of the National Academy of Sciences (PNAS) 1 publication, 1.59%
Chinese Physical Society	Chinese Physical Society, 1, 1.59% Chinese Physical Society 1 publication, 1.59%
American Institute of Physics (AIP)	American Institute of Physics (AIP), 1, 1.59% American Institute of Physics (AIP) 1 publication, 1.59%
Oxford University Press	Oxford University Press, 1, 1.59% Oxford University Press 1 publication, 1.59%
	2 4 6 8 10 12 14

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Wimmer S. et al. Mn‐Rich MnSb2Te4: A Topological Insulator with Magnetic Gap Closing at High Curie Temperatures of 45–50 K // Advanced Materials. 2021. Vol. 33. No. 42. p. 2102935.

GOST all authors (up to 50) Copy

Wimmer S., Sánchez-Barriga J., Küppers P., Ney A., Schierle E., Freyse F., Caha O., Michalicka J., Liebmann M., Primetzhofer D., Hoffmann M., Ernst A., Otrokov M. M., Bihlmayer G., Weschke E., Lake B., Chulkov E., Morgenstern M., Bauer G., Springholz G., Rader O. Mn‐Rich MnSb2Te4: A Topological Insulator with Magnetic Gap Closing at High Curie Temperatures of 45–50 K // Advanced Materials. 2021. Vol. 33. No. 42. p. 2102935.

RIS |

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RIS Copy

TY - JOUR

DO - 10.1002/adma.202102935

UR - https://doi.org/10.1002%2Fadma.202102935

TI - Mn‐Rich MnSb2Te4: A Topological Insulator with Magnetic Gap Closing at High Curie Temperatures of 45–50 K

T2 - Advanced Materials

AU - Küppers, Philipp

AU - Bauer, Günther

AU - Sánchez-Barriga, J.

AU - Ney, A.

AU - Schierle, E.

AU - Freyse, F.

AU - Caha, O.

AU - Michalicka, Jan

AU - Liebmann, M

AU - Primetzhofer, Daniel

AU - Hoffmann, M.

AU - Ernst, A.

AU - Otrokov, Mikhail M.

AU - Bihlmayer, Gustav

AU - Weschke, E.

AU - Lake, Bella

AU - Chulkov, E.V.

AU - Morgenstern, M.

AU - Springholz, G.

AU - Rader, O.

AU - Wimmer, S

PY - 2021

DA - 2021/09/01 00:00:00

PB - Wiley

SP - 2102935

IS - 42

VL - 33

SN - 0935-9648

SN - 1521-4095

ER -

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@article{2021_Wimmer,

author = {Philipp Küppers and Günther Bauer and J. Sánchez-Barriga and A. Ney and E. Schierle and F. Freyse and O. Caha and Jan Michalicka and M Liebmann and Daniel Primetzhofer and M. Hoffmann and A. Ernst and Mikhail M. Otrokov and Gustav Bihlmayer and E. Weschke and Bella Lake and E.V. Chulkov and M. Morgenstern and G. Springholz and O. Rader and S Wimmer},

title = {Mn‐Rich MnSb2Te4: A Topological Insulator with Magnetic Gap Closing at High Curie Temperatures of 45–50 K},

journal = {Advanced Materials},

year = {2021},

volume = {33},

publisher = {Wiley},

month = {sep},

url = {https://doi.org/10.1002%2Fadma.202102935},

number = {42},

pages = {2102935},

doi = {10.1002/adma.202102935}

}

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Wimmer, S., et al. “Mn‐Rich MnSb2Te4: A Topological Insulator with Magnetic Gap Closing at High Curie Temperatures of 45–50 K.” Advanced Materials, vol. 33, no. 42, Sep. 2021, p. 2102935. https://doi.org/10.1002%2Fadma.202102935.

Found error?

Publisher

Wiley

Journal

Advanced Materials

Quartile SCImago

Quartile WOS

Impact factor

29.4

ISSN

09359648 (Print)
15214095 (Electronic)

Labs

Laboratory of Electronic and Spin structure of Nanosystems

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