Physica B: Condensed Matter, volume 649, pages 414443

Routes for the topological surface state energy gap modulation in antiferromagnetic MnBi2Te4

Shikin Alexander M. ¹

Makarova Tatiana P. ¹

Eryzhenkov Alexander V. ¹

Usachov D. Yu. ¹

Estyunin Dmitry A. ¹

Glazkova Daria ¹

Klimovskikh Ilya I. ^{1, 2}

Rybkin Artem G. ¹

Tarasov Artem V. ¹

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St. Petersburg State University, 198504 St. Petersburg, Russia |

Center for Advanced Mesoscience and Nanotechnology, Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region 141700, Russia |

Publication type: Journal Article

Publication date: 2023-01-01

Elsevier

Journal: Physica B: Condensed Matter

Quartile SCImago

Quartile WOS

Impact factor: 2.8

ISSN: 09214526

DOI: 10.1016/j.physb.2022.414443

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Electronic, Optical and Magnetic Materials

Condensed Matter Physics

Electrical and Electronic Engineering

Abstract

We have analyzed different factors responsible for changes in the Dirac gap in MnBi 2 Te 4 and the routes that determine the possibilities of the purposeful gap modulation. It was shown that upon changing the surface van der Waals interval and surface spin–orbit coupling strength the topological surface states localization shifts between the surface septuple layers with opposite magnetizations, which leads to a nonmonotonic change in the Dirac gap size. The minimum in the Dirac gap corresponds to the point of changing the sign of the emerging exchange field. Moreover, we have shown that the Dirac gap can be effectively modulated by replacing magnetic Mn atoms in the surface layer with nonmagnetic ones or Bi and Te atoms with atoms of elements with a lower spin–orbit coupling that makes it possible to create synthetic layered topological systems with purposeful modification of the surface properties. • The modulation of the Dirac gap of MnBi 2 Te 4 can occur due to a significant redistribution of the topological surface states. • The best agreement between the experimentally measured dispersion maps and the calculation results is reached with a slightly compressed surface van der Waals interval. • Replacing magnetic Mn atoms in the surface layer with nonmagnetic ones or Bi and Te atoms with atoms of elements with a lower spin–orbit coupling makes it possible to create synthetic layered topological systems with purposeful modification of the surface properties.

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	1
Symmetry	Symmetry, 1, 25% Symmetry 1 publication, 25%
Nanomaterials	Nanomaterials, 1, 25% Nanomaterials 1 publication, 25%
Scientific Reports	Scientific Reports, 1, 25% Scientific Reports 1 publication, 25%
Communications Materials	Communications Materials, 1, 25% Communications Materials 1 publication, 25%
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Multidisciplinary Digital Publishing Institute (MDPI)	Multidisciplinary Digital Publishing Institute (MDPI), 2, 50% Multidisciplinary Digital Publishing Institute (MDPI) 2 publications, 50%
Springer Nature	Springer Nature, 2, 50% Springer Nature 2 publications, 50%
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Shikin A. M. et al. Routes for the topological surface state energy gap modulation in antiferromagnetic MnBi2Te4 // Physica B: Condensed Matter. 2023. Vol. 649. p. 414443.

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Shikin A. M., Makarova T. P., Eryzhenkov A. V., Usachov D. Y., Estyunin D. A., Glazkova D., Klimovskikh I. I., Rybkin A. G., Tarasov A. V. Routes for the topological surface state energy gap modulation in antiferromagnetic MnBi2Te4 // Physica B: Condensed Matter. 2023. Vol. 649. p. 414443.

RIS |

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RIS Copy

TY - JOUR

DO - 10.1016/j.physb.2022.414443

UR - https://doi.org/10.1016%2Fj.physb.2022.414443

TI - Routes for the topological surface state energy gap modulation in antiferromagnetic MnBi2Te4

T2 - Physica B: Condensed Matter

AU - Shikin, Alexander M.

AU - Makarova, Tatiana P.

AU - Eryzhenkov, Alexander V.

AU - Usachov, D. Yu.

AU - Estyunin, Dmitry A.

AU - Glazkova, Daria

AU - Klimovskikh, Ilya I.

AU - Rybkin, Artem G.

AU - Tarasov, Artem V.

PY - 2023

DA - 2023/01/01 00:00:00

PB - Elsevier

SP - 414443

VL - 649

SN - 0921-4526

ER -

BibTex

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BibTex Copy

@article{2023_Shikin,

author = {Alexander M. Shikin and Tatiana P. Makarova and Alexander V. Eryzhenkov and D. Yu. Usachov and Dmitry A. Estyunin and Daria Glazkova and Ilya I. Klimovskikh and Artem G. Rybkin and Artem V. Tarasov},

title = {Routes for the topological surface state energy gap modulation in antiferromagnetic MnBi2Te4},

journal = {Physica B: Condensed Matter},

year = {2023},

volume = {649},

publisher = {Elsevier},

month = {jan},

url = {https://doi.org/10.1016%2Fj.physb.2022.414443},

pages = {414443},

doi = {10.1016/j.physb.2022.414443}

}

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Publisher

Elsevier

Journal

Physica B: Condensed Matter

Quartile SCImago

Quartile WOS

Impact factor

2.8

ISSN

09214526 (Print)

Labs

Laboratory of Photoelectron Spectroscopy of Quantum Functional Materials

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