Magnetic impurity in hybrid and type-Ⅱ nodal line semimetals

• 作者: Xiao-Rong Yang Zhen-Zhen Huang Wan-Sheng Wang Jin-Hua Sun
• 来源期刊: 中国物理B（英文版）
• 年，卷（期）: 2021,（6）
• 所属期刊栏目: CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES
• 页码范围: 557-565
• 页数: 9页
• 语种: 英文
• DOI: 10.1088/1674-1056/abfa02

摘要

We study the Kondo screening of a spin-l/2 magnetic impurity in the hybrid nodal line semimetals (NLSMs) and the type-Ⅱ NLSMs by using the variational method.We mainly study the binding energy and the spin-spin correlation between magnetic impurity and conduction electrons.We find that in both the hybrid and type-Ⅱ cases,the density of states(DOS) is always finite,so the impurity and the conduction electrons always form bound states,and the bound state is more easily formed when the DOS is large.Meanwhile,due to the unique dispersion relation and the spin-orbit couplings in the NLSMs,the spatial spin-spin correlation components show very interesting features.Most saliently,various components of the spatial spin-spin correlation function decay with 1/r2 in the hybrid NLSMs,while they follow 1/r3 decay in the type-ⅡNLSMs.This property is mainly caused by the special band structures in the NLSMs,and it can work as a fingerprint to distinguish the two types of NLSMs.