IV族半导体表面磁性二维材料的结构设计和谷极化拓扑性质
结题报告
批准号:
11974270
项目类别:
面上项目
资助金额:
63.0 万元
负责人:
周健
依托单位:
学科分类:
凝聚态物质电子结构
结题年份:
2023
批准年份:
2019
项目状态:
已结题
项目参与者:
周健
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中文摘要
磁性二维材料可以呈现出丰富的物理特性,如谷极化拓扑性质,有望在未来作为高效的物理器件,近年来受到人们的广泛关注。目前的理论研究主要集中在自由状态的磁性二维材料,而对为数众多的IV族半导体表面生长的二维材料还较少涉及。其原因之一是对这些二维材料引入外来掺杂或修饰原子将其磁化时,外来原子的分布、材料的磁结构,以及其物理特性尚不清楚。本课题将发展可以全局搜索这些掺杂修饰原子最优位点的程序算法,结合第一性原理计算,寻找外来原子在IV族半导体表面生长的二维材料中形成均匀分布的稳定原子结构。同时深入研究这些结构所具有的磁性和谷极化拓扑性质。本研究期望阐明对表面生长二维材料掺杂修饰时结构稳定性规律,揭示出不同的磁结构和材料物理性质之间的关系,设计新型的具有谷极化拓扑性质的磁性二维材料。本项目的开展可以丰富磁性二维材料家族,拓展低维材料的物理性质,为实验合成具有谷极化拓扑性质的二维材料提供理论依据。
英文摘要
Two-dimensional magnetic materials possess plenty of physical properties, such as valley polarized topological feature. Owing to their potential applications in physical and electronic devices with high efficiency in the future, two-dimensional materials are receiving tremendous attention in recent years. Currently, most of theoretical researches on two-dimensional magnetic materials mainly focus on their free-standing states, rather than the materials epitaxially grown on a semiconductor substrate, where group-IV semiconductor surfaces are most widely used as the substrate. One reason is when we introduce foreign atoms to induce magnetism into the two-dimensional materials on surface, the distributions of these foreign atoms are unclear. This hinders further investigations of their magnetic structure and physical properties. In the current proposal, we will develop a global search algorithm to explore the optimal structure of these foreign doping atoms. Based on first-principles calculation, we search for the uniform distribution configuration of these foreign atoms, when they are doped into two-dimensional materials grown on group-IV semiconductor substrates. We will also study the magnetic properties and symmetry-broken induced valley polarized topological features of such doped structures. We aim to explore the basic rules of when foreign atoms prefer to distribute uniformly and regularly, and to reveal the relationship between different magnetic patterns and physical properties. With these, we design novel magnetic two-dimensional materials with valley polarized topological properties. This study would extend the family of two-dimensional magnetic materials, explore their possible new interesting physical properties, and provide theoretical basis to stimulate future experimental syntheses.
期刊论文列表
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科研奖励列表
会议论文列表
专利列表
Anisotropic terahertz optostriction in group-IV monochalcogenide compounds
IV族单硫属化合物中的各向异性太赫兹光致伸缩
DOI:10.1103/physrevb.105.195406
发表时间:2022-04
期刊:Physical Review B
影响因子:3.7
作者:Liu Kun;Zhou Jian
通讯作者:Zhou Jian
Terahertz Driven Reversible Topological Phase Transition of Monolayer Transition Metal Dichalcogenides.
太赫兹驱动的单层过渡金属二硫属化物的可逆拓扑相变
DOI:10.1002/advs.202003832
发表时间:2021-06
期刊:Advanced science (Weinheim, Baden-Wurttemberg, Germany)
影响因子:--
作者:Zhou J;Xu H;Shi Y;Li J
通讯作者:Li J
DOI:10.1038/s41524-023-01026-3
发表时间:2022-12
期刊:npj Computational Materials
影响因子:9.7
作者:Z. Qian;Jian Zhou;Hua Wang;Siyi Liu
通讯作者:Z. Qian;Jian Zhou;Hua Wang;Siyi Liu
DOI:10.1038/s41524-022-00728-4
发表时间:2022-03-15
期刊:NPJ COMPUTATIONAL MATERIALS
影响因子:9.7
作者:Guo, Yaguang;Zhou, Jian;Wang, Qian
通讯作者:Wang, Qian
DOI:10.1021/acs.nanolett.2c03238
发表时间:2022-11-07
期刊:NANO LETTERS
影响因子:10.8
作者:Liu,Kun;Mao,Sheng;Zhou,Jian
通讯作者:Zhou,Jian
层状反铁磁材料体光伏效应及其调控
  • 批准号:
    12374065
  • 项目类别:
    面上项目
  • 资助金额:
    53万元
  • 批准年份:
    2023
  • 负责人:
    周健
  • 依托单位:
二维铁电材料光致相变的机制研究
  • 批准号:
    21903063
  • 项目类别:
    青年科学基金项目
  • 资助金额:
    26.0万元
  • 批准年份:
    2019
  • 负责人:
    周健
  • 依托单位:
国内基金
海外基金