Strain-tunable ferromagnetism and chiral spin textures in two-dimensional Janus chromium dichalcogenides

doi:10.1103/PhysRevB.102.094425

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	Strain-tunable ferromagnetism and chiral spin textures in two-dimensional Janus chromium dichalcogenides
	Cui, Qirui ; Liang, Jinghua ; Shao, Ziji ; Cui, Ping ; Yang, Hongxin
刊名	PHYSICAL REVIEW B
	2020
卷号	102 期号:9
关键词	TOTAL-ENERGY CALCULATIONS SUPEREXCHANGE INTERACTION ANISOTROPY SKYRMIONS DYNAMICS
DOI	10.1103/PhysRevB.102.094425
英文摘要	Using first-principles calculations and micromagnetic simulations, we systematically investigate the magnetic properties of two-dimensional Janus chromium dichalcogenides (CrXTe, X = S, Se) under strain. We find that the CrSTe monolayer has high Curie temperature (T-c) of 295 K and an out-of-plane magnetic anisotropy. The CrSeTe monolayer has large Dzyaloshinskii-Moriya interaction (DMI) which can host chiral Neel domain wall (DW), and under an external magnetic field, the skyrmion states can be induced. As tensile strain increases, ferromagnetic exchange coupling and perpendicular magnetic anisotropy of Janus CrXTe monolayers both increase significantly, and the magnitude of DMI is reduced, which results in the giant ferromagnetism enhancement. Interestingly, for CrSeTe monolayer, distinct spin textures from chiral DW to uniform ferromagnetic states are induced under tensile strain. Moreover, the diameter and density of skyrmions in CrSeTe can be tuned by the amplitude of external magnetic field and strain. These findings highlight that the Janus CrXTe monolayers as good candidates for spintronic nanodevices.
学科主题	Materials Science ; Physics
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20489]
专题	2020专题
作者单位	1.Yang, HX (corresponding author), Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China. 2.Yang, HX (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China.
推荐引用方式 GB/T 7714	Cui, Qirui,Liang, Jinghua,Shao, Ziji,et al. Strain-tunable ferromagnetism and chiral spin textures in two-dimensional Janus chromium dichalcogenides[J]. PHYSICAL REVIEW B,2020,102(9).
APA	Cui, Qirui,Liang, Jinghua,Shao, Ziji,Cui, Ping,&Yang, Hongxin.(2020).Strain-tunable ferromagnetism and chiral spin textures in two-dimensional Janus chromium dichalcogenides.PHYSICAL REVIEW B,102(9).
MLA	Cui, Qirui,et al."Strain-tunable ferromagnetism and chiral spin textures in two-dimensional Janus chromium dichalcogenides".PHYSICAL REVIEW B 102.9(2020).