Very large Dzyaloshinskii-Moriya interaction in two-dimensional Janus manganese dichalcogenides and its application to realize skyrmion states

doi:10.1103/PhysRevB.101.184401

	Very large Dzyaloshinskii-Moriya interaction in two-dimensional Janus manganese dichalcogenides and its application to realize skyrmion states
	Liang, Jinghua 7; Wang, Weiwei 1,8; Du, Haifeng 1,8; Hall, Ali 2; Garcia, Karin 3,6; Chshiev, Mairbek 2; Fert, Albert 3,4,6; Yang, Hongxin 5,7
刊名	PHYSICAL REVIEW B
	2020-05-01
卷号	101
ISSN号	2469-9950
DOI	10.1103/PhysRevB.101.184401
通讯作者	Yang, Hongxin(hongxin.yang.spintec@gmail.com)
英文摘要	The Dzyaloshinskii-Moriya interaction (DMI), which only exists in noncentrosymmetric systems, is responsible for the formation of exotic chiral magnetic states. The absence of DMI in most two-dimensional (2D) magnetic materials is due to their intrinsic inversion symmetry. Here, using first-principles calculations, we demonstrate that significant DMI can be obtained in a series of Janus monolayers of manganese dichalcogenides MnXY (X,Y= S, Se, Te, X not equal Y) in which the difference between X and Y on the opposite sides of Mn breaks the inversion symmetry. In particular, the DMI amplitudes of MnSeTe and MnSTe are comparable to those of state-of-the-art ferromagnet/heavy metal heterostructures. In addition, by performing Monte Carlo simulations, we find that at low temperatures the ground states of the MnSeTe and MnSTe monolayers can transform from ferromagnetic states with wormlike magnetic domains into the skyrmion states by applying an external magnetic field. At increasing temperature, the skyrmion states start fluctuating above 50 K before an evolution to a completely disordered structure at higher temperature. The present results pave the way for new device concepts utilizing chiral magnetic structures in specially designed 2D ferromagnetic materials.
资助项目	National Natural Science Foundation of China[11874059] ; Zhejiang Province Natural Science Foundation of China[LR19A040002] ; Key Research Program of Frontier Sciences, CAS[ZDBS-LY-7021] ; DARPA TEE program ; DIPC ; University of the Basque Country ; Horizon 2020 Research and Innovation Programme[785219]
WOS关键词	INITIO MOLECULAR-DYNAMICS ; TOTAL-ENERGY CALCULATIONS ; ELECTRONIC-STRUCTURE ; FERROMAGNETISM ; TRANSITION ; SURFACES ; CRYSTAL ; LATTICE
WOS研究方向	Materials Science ; Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000529804900003
资助机构	National Natural Science Foundation of China ; Zhejiang Province Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; DARPA TEE program ; DIPC ; University of the Basque Country ; Horizon 2020 Research and Innovation Programme
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/103421]
专题	中国科学院合肥物质科学研究院
通讯作者	Yang, Hongxin
作者单位	1.Univ Sci & Technol China, Hefei 230026, Peoples R China 2.Univ Grenoble Alpes, CEA, CNRS, Spintec, Grenoble 38000, France 3.DIPC, San Sebastian 2018, Spain 4.Univ Paris Saclay, Unite Mixte Phys, Thales, CNRS, Palaiseau 91767, France 5.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China 6.Univ Basque Country, San Sebastian 2018, Spain 7.Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China 8.Chinese Acad Sci, Anhui Prov Key Lab Condensed Matter Phys Extreme, High Magnet Field Lab, Hefei 230026, Peoples R China
推荐引用方式 GB/T 7714	Liang, Jinghua,Wang, Weiwei,Du, Haifeng,et al. Very large Dzyaloshinskii-Moriya interaction in two-dimensional Janus manganese dichalcogenides and its application to realize skyrmion states[J]. PHYSICAL REVIEW B,2020,101.
APA	Liang, Jinghua.,Wang, Weiwei.,Du, Haifeng.,Hall, Ali.,Garcia, Karin.,...&Yang, Hongxin.(2020).Very large Dzyaloshinskii-Moriya interaction in two-dimensional Janus manganese dichalcogenides and its application to realize skyrmion states.PHYSICAL REVIEW B,101.
MLA	Liang, Jinghua,et al."Very large Dzyaloshinskii-Moriya interaction in two-dimensional Janus manganese dichalcogenides and its application to realize skyrmion states".PHYSICAL REVIEW B 101(2020).