Very large Dzyaloshinskii-Moriya interaction in two-dimensional Janus manganese dichalcogenides and its application to realize skyrmion states
文献类型：期刊论文
| 作者 | Liang, Jinghua; Wang, Weiwei; Du, Haifeng; Hall, Ali; Garcia, Karin; Chshiev, Mairbek; Fert, Albert; Yang, Hongxin |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2020 |
| 卷号 | 101期号:18 |
| 关键词 | INITIO MOLECULAR-DYNAMICS TOTAL-ENERGY CALCULATIONS ELECTRONIC-STRUCTURE FERROMAGNETISM TRANSITION SURFACES CRYSTAL LATTICE |
| DOI | 10.1103/PhysRevB.101.184401 |
| 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. |
| 学科主题 | Materials Science ; Physics |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/19712]  |
| 专题 | 2020专题 2020专题_期刊论文 |
| 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 | 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(18). |
| 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(18). |
| 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 101.18(2020). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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