Electronic Structure of Magnetic Topological Insulators Mn(Bi1–xSbx)2Te4 with Various Concentration of Sb Atoms | Sciact - CRIS-система Института катализа

Electronic Structure of Magnetic Topological Insulators Mn(Bi1–xSbx)2Te4 with Various Concentration of Sb Atoms Научная публикация

Журнал

Journal of Experimental and Theoretical Physics Letters (JETP Letters)
ISSN: 0021-3640 , E-ISSN: 1090-6487

Вых. Данные

Год: 2022, Том: 115, Страницы: 286–291 Страниц : 6 DOI: 10.1134/S0021364022100083

Ключевые слова

GAP; POINT

Авторы

Glazkova D.A. ¹ , Estyunin D.A. ¹ , Klimovskikh I.I. ^1,2 , Makarova T.P. ¹ , Tereshchenko O.E. ^3,4,5 , Kokh K.A. ^5,6,7 , Golyashov V.A. ^3,4,5 , Koroleva A.V. ¹ , Shikin A.M. ¹

Организации

1	St. Petersburg State University, 198504, St. Petersburg, Russia
2	National University of Science and Technology MISiS, 119049, Moscow, Russia
3	Rzhanov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia
4	Shared Access Center SKIF, Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, 630559, Novosibirsk, Russia
5	Novosibirsk State University, 630090, Novosibirsk, Russia
6	Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia
7	Kemerovo State University, 650000, Kemerovo, Russia

Информация о финансировании (1)

Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)

075-15-2020-797 (13.1902.21.0024)

Intrinsic magnetic topological insulator MnBi2Te4 provides a promising platform to implement the quantum anomalous Hall effect at increased temperatures and other unique topological effects. However, to do this, the energy gap opening at the Dirac point should be located at the Fermi level. One of the widely used methods to shift the Dirac point toward the Fermi level is the partial substitution of Bi atoms for Sb atoms. In this work, the electronic structure of the core levels and valence band of Mn(Bi1 – xSbx)2Te4 compounds with various concentration x of Sb atoms from 0 to 1 has been studied. It has been shown that the Dirac point with an increase in the concentration of Sb atoms is shifted toward the Fermi level and becomes localized at it when x ≈ 0.3. In this case, the “rigid” shift of the valence band, including the Mn 3d level, has been observed without changes in the structure of the valence and conduction bands. The concentration dependence of the shift of the Dirac point is approximated by a square root function, which corresponds to a linear increase in the charge carrier density.

Glazkova D.A. , Estyunin D.A. , Klimovskikh I.I. , Makarova T.P. , Tereshchenko O.E. , Kokh K.A. , Golyashov V.A. , Koroleva A.V. , Shikin A.M.
Electronic Structure of Magnetic Topological Insulators Mn(Bi1–xSbx)2Te4 with Various Concentration of Sb Atoms
Journal of Experimental and Theoretical Physics Letters (JETP Letters). 2022. V.115. P.286–291. DOI: 10.1134/S0021364022100083 WOS Scopus РИНЦ CAPlus OpenAlex СКИФ ID

Глазкова Д.А. , Естюнин Д.А. , Климовских И.И. , Макарова Т.П. , Терещенко О.Е. , Кох К.А. , Голяшов В.А. , Королева А.В. , Шикин А.М.
Электронная структура магнитных топологических изоляторов серии Mn(Bi1-xSbx)2Te4 при изменении концентрации атомов Sb
Письма в Журнал экспериментальной и теоретической физики. 2022. Т.115. №5-6. С.315-321. DOI: 10.31857/S1234567822050081 РИНЦ СКИФ ID

Поступила в редакцию:	3 февр. 2022 г.
Принята к публикации:	3 февр. 2022 г.
Опубликована в печати:	1 мар. 2022 г.
Опубликована online:	15 мая 2022 г.

Web of science:	WOS:000796072800008
Scopus:	2-s2.0-85132608641
РИНЦ:	49136184
Chemical Abstracts:	2022:1293496
OpenAlex:	W4280653294
СКИФ ID:	1532

БД	Цитирований
Scopus	8
Web of science	9
OpenAlex	7