【摘 要】
:
Functionalized two-dimensional materials with multiferroicity are highly desired to be next-generation electronic devices.Here we theoretically predict a family
【机 构】
:
New Energy Technology Engineering Laboratory of Jiangsu Provence & School of Science, Nanjing Univer
论文部分内容阅读
Functionalized two-dimensional materials with multiferroicity are highly desired to be next-generation electronic devices.Here we theoretically predict a family of Janus vanadium dichalcogenides VXX(X/X=S,Se,Te) monolayers with multiferroic properties,combing ferromagnetism,ferroelasticity and piezoelectricity.Due to the unpaired electrons on the V atom,the Janus VXXmonolayers have intrinsic long-range ferromagnetic orders.Particularly,the Curie temperature of 1T-VSeTe monolayer is up to 100 K,which is greatly higher than 2D 1T-VSe2 and 1T-VTe2.Furthermore,the six Janus VXXmonolayers have similar crater-like ferroelastic switching curves.Compared to black phosphorus,2H-VSSe monolayer has the similar ferroelastic switching signal and 4 times lower energy barrier.In addition,the out-of-plane piezoelectricity induced by the structure asymmetry in the vertical direction gives the 2H-VXXmonolayers the potential to be piezoelectric materials.It is found that a built-in electric field in the vertical direction due to the different electronegativity values of chalcogen atoms induces the changes of electronic structures,which leads to the appearance of three different types of band gaps in the three H-phase structures.Recently,the experimental growth of the Janus MoSSe monolayers and the electrochemical exfoliation of ferromagnetic monolayered VSe2 make the Janus VXXmonolayers possibly fabricated in experiments.
其他文献
At low four-momentum transfer squared 0.02 <-t < 0.2 (GeV/c)2,we use the Chou-Yang model to predict the form factor of protons from proton proton elastic scatteri
We characterize a modified continuous-variable quantum key distribution (CV-QKD) protocol with four states in the middle of a quantum channel.In this protocol,t
Quasicrystals have long-range quasi-periodic translational ordering and non-crystallographic rotational symmetry.Al-Cu-Fe quasicrystals have great potential for
On the basis of the analysis of classical stock model, according to the limitation of the model, the article puts forward the revision of classical model and en
探索了盾构管片拼装直接过站施工工艺,分析了盾构二次始发风险控制,并介绍在广州市轨道交通九号线清布站-高增站盾构区间施工中的实际应用,针对完工车站的结构特点和场地环境
本文借助于数据溶合方法中的引导法构成的系统在移动式机器人定位中取得了令人满意的结果.本系统的特点是:用分布式黑板作为计算机构,使系统具有并行处理能力;把时间(时序)推
We present an algorithm for the generalized search problem (searching k marked items among N items) based on a continuous Hamiltonian and exploiting resonance.T
A Bose-Einstein condensate with a large atom number is an important experimental platform for quantum simulation and quantum information research.An optical dip
The Weyl semimetal has emerged as a new topologically nontrivial phase of matter,hosting low-energy excitations of massless Weyl fermions.Here,we present a comp
通过基于燃油消耗率与液压系统功率计算的液压动臂塔机发动机失速对比试验研究,解决了吊载高速下降时发动机失速稳定控制问题。
Based on the comparative experimental res