【摘 要】
：
Two-dimensional (2D) magnetic materials have aroused tremendous interest due to the 2D confinement of magnetism and potential applications in spintronic and valleytronic devices.However,most of the currently 2D magnetic materials are achieved by the exfol
【机 构】
：
School of Physics and Electronics,Hunan University,Changsha 410082,China;Key Laboratory for Micro-Na
论文部分内容阅读
Two-dimensional (2D) magnetic materials have aroused tremendous interest due to the 2D confinement of magnetism and potential applications in spintronic and valleytronic devices.However,most of the currently 2D magnetic materials are achieved by the exfoliation from their bulks,of which the thickness and domain size are difficult to control,limiting the practical device applications.Here,we demonstrate the realization of thickness-tunable rhombohedral Cr2Se3 nanosheets on different substrates via the chemical vapor deposition route.The magnetic transition temperature at about 75 K is ob-served.Furthermore,van der Waals heterostructures consisting of Cr2Se3 nanosheets and monolayer WS2 are constructed.We observe the magnetic proximity effect in the heterostructures,which manifests the manipulation of the valley polariza-tion in monolayer WS2.Our work contributes to the vapor growth and applications of 2D magnetic materials.
其他文献
为了改进统编语文教材中“名著导读”板块的教学质量,以《童年》《西游记》等经典著作为例,以项目化学习为抓手,创新课堂教学形式,驱动学生主体化学习活动,拓展课程边界,提出初中名著阅读的项目化学习路径与策略,以期为一线教师提供相关思路.
通过对绿色指标学校报告的解读分析,发现部分学生在对信息进行整合、分析、推理和评价时,存在着比较大的困难,没有达到课程标准规定的基本要求.此外,报告数据显示他们的自信心不强、学习动机不足、学习策略与方法不得当.为此,上海市龙茗中学设计并实施了“天使成长帮教行动”,即任课教师与学困生进行结对,签订协议,明确双方的目标任务与责任,让每个孩子都能像“天使”一样健康成长.通过课前助学,让学生参与课前备课,提前预习教学内容;采用“学一退三”和“举三反一”的方法,帮助学生建立起新旧知识间的联系;通过延时评价,肯定学生的
In the last decade,perovskite solar cells (PSCs) have greatly drawn researchers\' attention,with the power conversion efficiency surging from 3.8％ to 25.5％.PSCs possess the merits of low cost,simple fabrication process and high performance,which could b
Sulfur and lanthanum hydrides under compression display superconducting states with high observed critical temperatures.It has been recently demonstrated that carbonaceous sulfur hydride displays room temperature superconductivity.However,this phenomenon
Understanding the interplay between superconductivity and charge-density wave (CDW) in NbSe2 is vital for both fundamental physics and future device applications.Here,combining scanning tunneling microscopy,angle-resolved photoemission spectroscopy and Ra
We investigate the entanglement dynamics of two distinguishable two-level systems (TLSs) characterized by energy difference δ located inside a rectangular hollow metallic waveguide of transverse dimensions a and b.The effects of energy difference δ and th
Since Yukawa proposed that the pion is responsible for mediating the nucleon-nucleon interaction,meson ex-changes have been widely used in understanding hadron-hadron interactions.The most studied mesons are the σr,π,ρ,and ω,while other heavier mesons are
Quantum speed limit and entanglement of a two-spin Heisenberg XYZ system in an inhomogeneous external magnetic field are investigated.The physical system studied is the excess electron spin in two adjacent quantum dots.The influences of magnetic field inh
We report the production of 87Rb Bose-Einstein condensate in an asymmetric crossed optical dipole trap(ACODT) without the need of an additional dimple laser.In our experiment,the ACODT is formed by two laser beams with different radii to achieve efficient
Exploring two-dimensional (2D) magnetic heterostructures is essential for future spintronic and optoelectronic de-vices.Herein,using first-principle calculations,stable ferromagnetic ordering and colorful electronic properties are es-tablished by construc