首页|Half-metallic ferromagnetic Weyl fermions related to dynamic correlations in the zinc-blende compound VAs

Half-metallic ferromagnetic Weyl fermions related to dynamic correlations in the zinc-blende compound VAs

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
The realization of 100％polarized topological Weyl fermions in half-metallic ferromagnets is of particular importance for fundamental research and spintronic applications.Here,we theoretically investigate the electronic and topological prop-erties of the zinc-blende compound VAs,which was deemed as a half-metallic ferromagnet related to dynamic correlations.Based on the combination of density functional theory and dynamical mean field theory,we uncover that the half-metallic ferromagnet VAs exhibits attractive Weyl semimetallic behaviors which are very close to the Fermi level in the DFT+U regime with effect U values ranging from 1.5 eV to 2.5 eV.Meanwhile,we also investigate the magnetization-dependent topological properties;the results show that the change of magnetization directions only slightly affects the positions of Weyl points,which is attributed to the weak spin-orbital coupling effects.The topological surface states of VAs projected on semi-infinite(001)and(111)surfaces are investigated.The Fermi arcs of all Weyl points are clearly visible on the pro-jected Fermi surfaces.Our findings suggest that VAs is a fully spin-polarized Weyl semimetal with many-body correlated effects in the effective U values range from 1.5 eV to 2.5 eV.

density functional theoryWeyl semimetaldynamical mean field theoryhalf metallic ferromagnet

丁献勇、魏皓然、朱瑞翔、肖晓亮、吴小志、王锐

展开 >

Institute for Structure and Function & Department of Physics & Chongqing Key Laboratory for Strongly Coupled Physics,Chongqing University,Chongqing 400044,China

Center of Quantum Materials and Devices,Chongqing University,Chongqing 400044,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNatural Science Foundation of Chongging

12204074122224029236510112347101CSTB2023NSCQ-JQX0024

2024

10.1088/1674-1056/ad5f86

中国物理B(英文版)
中国物理学会和中国科学院物理研究所

中国物理B(英文版)

CSTPCDEI
影响因子：0.995
ISSN：1674-1056
年,卷(期)：2024.33(9)