Strong Dzyaloshinskii-Moriya interaction in monolayer CrI3 on metal substrates

Zhang，Fan1; Li，Xueao1; Wu，Yabei2,3; Wang，Xiaolong1; Zhao，Jijun1; Gao，Weiwei1

2022-09-01

10.1103/PhysRevB.106.L100407

Physical Review B   影响因子和分区

2469-9950

2469-9969

Dzyaloshinskii-Moriya interaction (DMI) is the primary mechanism for realizing real-space chiral spin textures, which are regarded as key components for the next-generation spintronics. However, DMI arises from a perturbation term of the spin-orbit interaction and is usually weak in pristine magnetic semiconductors. To date, large DMI and the resulting skyrmions are only realized in a few materials under stringent conditions. Using first-principles calculations, we demonstrate that significant DMI occurs between nearest-neighbor Cr atoms in two-dimensional (2D) magnetic semiconductor CrI3 on Au or Cu substrates. This exceptionally strong DMI is generated by the interfacial charge transfer and weak chemical interactions between chromium halides and metal substrates, which break the spatial inversion symmetry. These findings highlight the significance of substrate effects in 2D magnets and expand the inventory of feasible materials with strong DMI.

SCI

英语

其他

National Natural Science Foundation of China["12104080","91961204"] ; Fundamental Research Funds for the Central Universities[DUT22LK04] ; XingLiaoYingCai Project of Liaoning province, China[XLYC1905014]

Materials Science ; Physics

Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000866525000003

AMER PHYSICAL SOC

PHYSICS

2-s2.0-85139399272

Scopus

1.Key Laboratory of Material Modification by Laser,Ion and Electron Beams,Dalian University of Technology,Ministry of Education,Dalian,116024,China
2.Department of Materials Science and Engineering,Shenzhen Institute for Quantum Science & Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
3.Guangdong Provincial Key Lab for Computational Science and Materials Design,Shenzhen Municipal Key Lab for Advanced Quantum Materials and Devices,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China

Zhang，Fan,Li，Xueao,Wu，Yabei,et al. Strong Dzyaloshinskii-Moriya interaction in monolayer CrI3 on metal substrates[J]. Physical Review B,2022,106(10).

Zhang，Fan,Li，Xueao,Wu，Yabei,Wang，Xiaolong,Zhao，Jijun,&Gao，Weiwei.(2022).Strong Dzyaloshinskii-Moriya interaction in monolayer CrI3 on metal substrates.Physical Review B,106(10).

Zhang，Fan,et al."Strong Dzyaloshinskii-Moriya interaction in monolayer CrI3 on metal substrates".Physical Review B 106.10(2022).