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Magnetic Dirac semimetal state of (Mn,Ge)Bi2Te4. / Frolov, Alexander S.; Усачев, Дмитрий Юрьевич; Тарасов, Артем Вячеславович; Fedorov, Alexander V.; Бокай, Кирилл Андреевич; Климовских, Илья Игоревич; Stolyarov, Vasily S.; Sergeev, Anton I.; Lavrov, Alexander N.; Golyashov, Vladimir A.; Tereshchenko, Oleg E.; Di Santo, Giovanni; Petacсia, Luca; Clark, Oliver J.; Sánchez-Barriga, Jaime; Yashina, Lada V.

In: Communications Physics, Vol. 7, No. 1, 180, 01.12.2024.

Research output: Contribution to journal › Article › peer-review

Harvard

Frolov, AS, Усачев, ДЮ, Тарасов, АВ, Fedorov, AV, Бокай, КА, Климовских, ИИ, Stolyarov, VS, Sergeev, AI, Lavrov, AN, Golyashov, VA, Tereshchenko, OE, Di Santo, G, Petacсia, L, Clark, OJ, Sánchez-Barriga, J & Yashina, LV 2024, 'Magnetic Dirac semimetal state of (Mn,Ge)Bi2Te4', Communications Physics, vol. 7, no. 1, 180. https://doi.org/10.1038/s42005-024-01675-w

APA

Frolov, A. S., Усачев, Д. Ю., Тарасов, А. В., Fedorov, A. V., Бокай, К. А., Климовских, И. И., Stolyarov, V. S., Sergeev, A. I., Lavrov, A. N., Golyashov, V. A., Tereshchenko, O. E., Di Santo, G., Petacсia, L., Clark, O. J., Sánchez-Barriga, J., & Yashina, L. V. (2024). Magnetic Dirac semimetal state of (Mn,Ge)Bi2Te4. Communications Physics, 7(1), [180]. https://doi.org/10.1038/s42005-024-01675-w

Vancouver

Frolov AS, Усачев ДЮ, Тарасов АВ, Fedorov AV, Бокай КА, Климовских ИИ et al. Magnetic Dirac semimetal state of (Mn,Ge)Bi2Te4. Communications Physics. 2024 Dec 1;7(1). 180. https://doi.org/10.1038/s42005-024-01675-w

Author

Frolov, Alexander S. ; Усачев, Дмитрий Юрьевич ; Тарасов, Артем Вячеславович ; Fedorov, Alexander V. ; Бокай, Кирилл Андреевич ; Климовских, Илья Игоревич ; Stolyarov, Vasily S. ; Sergeev, Anton I. ; Lavrov, Alexander N. ; Golyashov, Vladimir A. ; Tereshchenko, Oleg E. ; Di Santo, Giovanni ; Petacсia, Luca ; Clark, Oliver J. ; Sánchez-Barriga, Jaime ; Yashina, Lada V. / Magnetic Dirac semimetal state of (Mn,Ge)Bi2Te4. In: Communications Physics. 2024 ; Vol. 7, No. 1.

BibTeX

@article{c4bb4b407c754b7eab99237047f0e691,
title = "Magnetic Dirac semimetal state of (Mn,Ge)Bi2Te4",
abstract = "The ability to finely tune the properties of magnetic topological insulators (TIs) is crucial for quantum electronics. We studied solid solutions with a general formula GexMn1-xBi2Te4 between two isostructural Z2 TIs, magnetic MnBi2Te4 and nonmagnetic GeBi2Te4 with Z2 invariants of 1;000 and 1;001, respectively. We observed linear x-dependent magnetic properties, composition-independent pairwise exchange interactions, and topological phase transitions (TPTs) between topologically nontrivial phases and the semimetal state. The TPTs are driven purely by the variation of orbital contributions. By tracing the x-dependent Bi 6p contribution to the states near the fundamental gap, the effective spin-orbit coupling variation is extracted. The gapless state observed at x = 0.42 closely resembles a Dirac semimetal above the N{\'e}el temperature and shows a magnetic gap below, which is clearly visible in raw photoemission data. The observed behavior demonstrates an ability to precisely control topological and magnetic properties of TIs.",
author = "Frolov, {Alexander S.} and Усачев, {Дмитрий Юрьевич} and Тарасов, {Артем Вячеславович} and Fedorov, {Alexander V.} and Бокай, {Кирилл Андреевич} and Климовских, {Илья Игоревич} and Stolyarov, {Vasily S.} and Sergeev, {Anton I.} and Lavrov, {Alexander N.} and Golyashov, {Vladimir A.} and Tereshchenko, {Oleg E.} and {Di Santo}, Giovanni and Luca Petacсia and Clark, {Oliver J.} and Jaime S{\'a}nchez-Barriga and Yashina, {Lada V.}",
year = "2024",
month = dec,
day = "1",
doi = "10.1038/s42005-024-01675-w",
language = "English",
volume = "7",
journal = "Communications Physics",
issn = "2399-3650",
publisher = "Springer Nature",
number = "1",

}

RIS

TY - JOUR

T1 - Magnetic Dirac semimetal state of (Mn,Ge)Bi2Te4

AU - Frolov, Alexander S.

AU - Усачев, Дмитрий Юрьевич

AU - Тарасов, Артем Вячеславович

AU - Fedorov, Alexander V.

AU - Бокай, Кирилл Андреевич

AU - Климовских, Илья Игоревич

AU - Stolyarov, Vasily S.

AU - Sergeev, Anton I.

AU - Lavrov, Alexander N.

AU - Golyashov, Vladimir A.

AU - Tereshchenko, Oleg E.

AU - Di Santo, Giovanni

AU - Petacсia, Luca

AU - Clark, Oliver J.

AU - Sánchez-Barriga, Jaime

AU - Yashina, Lada V.

PY - 2024/12/1

Y1 - 2024/12/1

N2 - The ability to finely tune the properties of magnetic topological insulators (TIs) is crucial for quantum electronics. We studied solid solutions with a general formula GexMn1-xBi2Te4 between two isostructural Z2 TIs, magnetic MnBi2Te4 and nonmagnetic GeBi2Te4 with Z2 invariants of 1;000 and 1;001, respectively. We observed linear x-dependent magnetic properties, composition-independent pairwise exchange interactions, and topological phase transitions (TPTs) between topologically nontrivial phases and the semimetal state. The TPTs are driven purely by the variation of orbital contributions. By tracing the x-dependent Bi 6p contribution to the states near the fundamental gap, the effective spin-orbit coupling variation is extracted. The gapless state observed at x = 0.42 closely resembles a Dirac semimetal above the Néel temperature and shows a magnetic gap below, which is clearly visible in raw photoemission data. The observed behavior demonstrates an ability to precisely control topological and magnetic properties of TIs.

AB - The ability to finely tune the properties of magnetic topological insulators (TIs) is crucial for quantum electronics. We studied solid solutions with a general formula GexMn1-xBi2Te4 between two isostructural Z2 TIs, magnetic MnBi2Te4 and nonmagnetic GeBi2Te4 with Z2 invariants of 1;000 and 1;001, respectively. We observed linear x-dependent magnetic properties, composition-independent pairwise exchange interactions, and topological phase transitions (TPTs) between topologically nontrivial phases and the semimetal state. The TPTs are driven purely by the variation of orbital contributions. By tracing the x-dependent Bi 6p contribution to the states near the fundamental gap, the effective spin-orbit coupling variation is extracted. The gapless state observed at x = 0.42 closely resembles a Dirac semimetal above the Néel temperature and shows a magnetic gap below, which is clearly visible in raw photoemission data. The observed behavior demonstrates an ability to precisely control topological and magnetic properties of TIs.

UR - https://www.mendeley.com/catalogue/2f286704-7861-3e29-bf08-4c6d7ff3987e/

U2 - 10.1038/s42005-024-01675-w

DO - 10.1038/s42005-024-01675-w

M3 - Article

VL - 7

JO - Communications Physics

JF - Communications Physics

SN - 2399-3650

IS - 1

M1 - 180

ER -

ID: 121262370