High-temperature magnetically topological candidate material Mn3Bi2Te6

Wu，Wen Feng1,2; Huang，Xiao Teng1,2; Wang，Han Yu1,2; Wang，Wei Hua3; Liu，Da Yong4; Yu，Xiang Long5,6; Zeng，Zhi1,2; Zou，Liang Jian1,2

2024-03-27

10.1088/1361-648X/ad136d

Journal of Physics Condensed Matter   影响因子和分区

0953-8984

1361-648X

The Mn-Bi-Te family displaying magnetism and non-trivial topological properties has received extensive attention. Here, we predict that the antiferromagnetic structure of MnBiTe with three MnTe layers is energetically stable and the magnetic energy difference of Mn-Mn is enhanced four times compared with that in the single MnTe layer of MnBiTe. The predicted Néel transition point is raised to 102.5 K, surpassing the temperature of liquid nitrogen. The topological properties show that with the variation of the MnTe layer from a single layer to three layers, the system transforms from a non-trivial topological phase to a trivial topological phase. Interestingly, the ferromagnetic state of MnBiTe is a topological semimetal and it exhibits a topological transition from trivial to non-trivial induced by the magnetic transition. Our results enrich the Mn-Bi-Te family system, offer a new platform for studying topological phase transitions, and pave a new way to improve the working temperature of magnetically topological devices.

first-principles calculations magnetism topological phase transitions

SCI

英语

其他

PHYSICS

2-s2.0-85179899030

Scopus

1.Key Laboratory of Materials Physics,Institute of Solid State Physics,HFIPS,Chinese Academy of Sciences,Hefei,230031,China
2.Science Island Branch of Graduate School,University of Science and Technology of China,Hefei,230026,China
3.Department of Electronic Science and Engineering,Tianjin Key Laboratory of Photo-Electronic Thin Film Device and Technology,Nankai University,Tianjin,300071,China
4.Department of Physics,School of Sciences,Nantong University,Nantong,226019,China
5.Shenzhen Institute for Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
6.International Quantum Academy,Shenzhen,518048,China

Wu，Wen Feng,Huang，Xiao Teng,Wang，Han Yu,et al. High-temperature magnetically topological candidate material Mn3Bi2Te6[J]. Journal of Physics Condensed Matter,2024,36(12).

Wu，Wen Feng.,Huang，Xiao Teng.,Wang，Han Yu.,Wang，Wei Hua.,Liu，Da Yong.,...&Zou，Liang Jian.(2024).High-temperature magnetically topological candidate material Mn3Bi2Te6.Journal of Physics Condensed Matter,36(12).

Wu，Wen Feng,et al."High-temperature magnetically topological candidate material Mn3Bi2Te6".Journal of Physics Condensed Matter 36.12(2024).