Interfacing Two-Dimensional and Magnetic Topological Insulators: Bi Bilayer on MnBi2Te4-Family Materials | Sciact - CRIS-system of Boreskov Institute of Catalysis

Interfacing Two-Dimensional and Magnetic Topological Insulators: Bi Bilayer on MnBi2Te4-Family Materials Full article

Journal

Materials Today Advances
ISSN: 2590-0498

Output data

Year: 2024, Volume: 23, Article number : 100511, Pages count : 9 DOI: 10.1016/j.mtadv.2024.100511

Tags

Magnetic topological insulators; 2D materials; Photoelectron spectroscopy

Authors

Klimovskikh I.I. ¹ , Eremeev S.V. ² , Estyunin D.A. ³ , Filnov S.O. ³ , Shimada K. ⁴ , Golyashov V.A. ^5,3,13 , Solovova N.Yu. ¹³ , Tereshchenko O.E. ^5,3,13 , Kokh K.A. ^6,3 , Frolov A.S. ^14,7 , Sergeev A.I. ^14,7 , Stolyarov V.S. ^14,1 , Trontl V.Mikšić ⁸ , Petaccia L. ⁹ , Di Santo G. ⁹ , Tallarida M. ¹⁰ , Dai J. ¹⁰ , Blanco-Canosa S. ^1,11 , Valla T. ¹ , Shikin A.M. ³ , Chulkov E.V. ^1,3,12

Affiliations

1	Donostia International Physics Center (DIPC), 20018 Donostia-San Sebastián, Basque Country, Spain
2	Institute of Strength Physics and Materials Science, Russian Academy of Sciences, 634055 Tomsk, Russia
3	Saint Petersburg State University, 198504 Saint Petersburg, Russia
4	Research Institute for Synchrotron Radiation Science, Hiroshima University, Hiroshima, Japan
5	Synchrotron Radiation Facility SKIF, Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences, Kol’tsovo 630559, Russia
6	Sobolev Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia
7	Lomonosov Moscow State University, Leninskie Gory 1/3, Moscow 119991, Russia
8	Centre for Advanced Laser Techniques, Institute of Physics, 10000 Zagreb, Croatia
9	Elettra Sincrotrone Trieste, Strada Statale 14 km 163.5, 34149 Trieste, Italy
10	ALBA Synchrotron Light Source, Cerdanyola del Vallès, 08290 Barcelona, Spain
11	IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
12	Departamento de Polímeros y Materiales Avanzados: Física, Química y Tecnología, Facultad de Ciencias Qumicas, Universidad del País Vasco UPV/EHU, 20080 San Sebastián/Donostia, Basque Country, Spain
13	Novosibirsk State University, Novosibirsk, 630090, Russia
14	Moscow Center for Advanced Studies, Kulakova str. 20, Moscow, 123592, Russia

Funding (12)

1	Russian Foundation for Basic Research	21-52-12024 (121022500006-9)
2	Ministry of Science and Higher Education of the Russian Federation	FWZN-2022-0029 (122041400031-2)
3	Ministry of Science and Higher Education of the Russian Federation	FWUR-2024-0042
4	La Caixa Foundation	LCF/BQ/PI24/12040021
5	Saint Petersburg State University	95442847
6	Ministry of Science and Higher Education of the Russian Federation	FWRW-2022-0001
7	Russian Foundation for Basic Research	19-29-12061 (АААА-А20-120011790118-7)
8	Ministry of Economic Affairs and Digital Transformation	PID2021-122609NB-C21
9	Russian Science Foundation	23-72-30004 (123101700351-8)
10	Russian Science Foundation	23-72-00020 (123052200122-4)
11	La Caixa Foundation	100010434
12	Gipuzkoa Provincial Council	Gipuzkoa NEXT 2023

Meeting of non-trivial topology with magnetism results in novel phases of matter, such as quantum anomalous Hall (QAH) or axion insulator phases. Even more exotic states with high and tunable Chern numbers are expected at the contact of intrinsic magnetic topological insulators (IMTIs) and 2D topological insulators (TIs). Here we synthesize a heterostructures composed of 2D TI and 3D IMTIs, specifically of bismuth bilayer on top of MnBi2Te4-family of compounds and study their electronic properties by means of angle-resolved photoelectron spectroscopy (ARPES) and density functional theory (DFT). The epitaxial interface is characterized by hybridized Bi and IMTI electronic states. The Bi bilayer-derived states on different members of MnBi2Te4-family of materials are similar, except in the region of mixing with the topological surface states of the substrate. In that region, the new, substrate dependent interface Dirac state is observed. Our ab initio calculations show rich interface phases with emergence of exchange split 1D edge states, making the Bi/IMTI heterostructures promising playground for observation of novel members in the family of quantum Hall effects.

Klimovskikh I.I. , Eremeev S.V. , Estyunin D.A. , Filnov S.O. , Shimada K. , Golyashov V.A. , Solovova N.Y. , Tereshchenko O.E. , Kokh K.A. , Frolov A.S. , Sergeev A.I. , Stolyarov V.S. , Trontl V.M. , Petaccia L. , Di Santo G. , Tallarida M. , Dai J. , Blanco-Canosa S. , Valla T. , Shikin A.M. , Chulkov E.V.
Interfacing Two-Dimensional and Magnetic Topological Insulators: Bi Bilayer on MnBi2Te4-Family Materials
Materials Today Advances. 2024. V.23. 100511 :1-9. DOI: 10.1016/j.mtadv.2024.100511 WOS Scopus OpenAlex

Submitted:	Apr 27, 2024
Accepted:	Jun 21, 2024
Published online:	Jul 13, 2024
Published print:	Aug 1, 2024

Web of science:	WOS:001268563700001
Scopus:	2-s2.0-85198080438
OpenAlex:	W4400603680

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