华东师范大学学报(自然科学版) ›› 2022, Vol. 2022 ›› Issue (2): 84-92.doi: 10.3969/j.issn.1000-5641.2022.02.010

• 物理学与电子学 • 上一篇    下一篇

二维过渡金属磷化物MnTn+1(M = V, Cr; T = P, As, Sb)的第一性原理计算研究

张亚琼, 谢文辉*()   

  1. 华东师范大学 物理与电子科学学院 , 上海 200241
  • 收稿日期:2020-12-17 出版日期:2022-03-25 发布日期:2022-03-28
  • 通讯作者: 谢文辉 E-mail:whxie@phy.ecnu.edu.cn
  • 基金资助:
    国家自然科学基金(51572086)

First-principles calculations investigations of two-dimensional transition metal phosphide MnTn+1(M = V, Cr; T = P, As, and Sb) slices

Yaqiong ZHANG, Wenhui XIE*()   

  1. School of Physics and Electronic Science, East China Normal University, Shanghai 200241, China
  • Received:2020-12-17 Online:2022-03-25 Published:2022-03-28
  • Contact: Wenhui XIE E-mail:whxie@phy.ecnu.edu.cn

摘要:

采用基于密度泛函理论的第一性原理计算, 研究了二维过渡金属磷系化合物MnTn+1 (M = V, Cr; T = P, As, Sb)材料的结构、稳定性、电子结构和磁性质. 通过计算形成能和声子谱, 发现只有V4As5、 Cr2P3、 Cr3P4、 Cr4P5、 Cr2As3和Cr3As4是稳定的二维磁性多层膜. 计算结果表明, 这些稳定的二维磁性材料都是反铁磁金属. 此外, 还对这些材料的电子结构和磁耦合机制做了进一步的分析.

关键词: 第一性原理计算, 二维材料, 磁性, 自旋电子学

Abstract:

In this paper, the atomic structure, stability, electronic structure, and magnetism of two-dimensional transition metal phosphide MnTn+1 (M = V, Cr; T = P, As, and Sb) slices were systematically studied using the first-principles calculations based on density functional theory. By calculating the formation energy and phonon spectrum, it was determined that only V4As5, Cr2P3, Cr3P4, Cr4P5, Cr2As3, and Cr3As4 are stable two-dimensional magnetic multilayers. The results show that these stable two-dimensional magnetic materials are antiferromagnetic metals. In addition, the electronic structure and the magnetic coupling mechanism of these materials were further analyzed.

Key words: first-principles calculations, two-dimensional materials, magnetism, spintronics

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