Fe_(3)GeTe_(2):a site-differentiated Hund metal

作     者：Taek Jung Kim Siheon Ryee Myung Joon Han 

作者机构：Department of PhysicsKAISTDaejeon34141Republic of Korea I.Institute of Theoretical PhysicsUniversity of HamburgNotkestrasse 9-11Hamburg22607Germany 

出 版 物：《npj Computational Materials》 (计算材料学（英文）)

年 卷 期：2022年第8卷第1期

页      面：2355-2360页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 

基　　金：This work was supported by the National Research Foundation of Korea(NRF)grant funded by the Korea government(MSIT)(Grant Nos.2021R1A2C1009303 and NRF-2018M3D1A1058754) the KAIST Grand Challenge 30 Project(KC30)in 2021 funded by the Ministry of Science and ICT of Korea and KAIST(N11210105) the National Supercomputing Center with supercomputing resources,including technical support(KSC-2020-CRE-0084) 

主　　题：strength establishing metallic 

摘      要：Magnetism in two-dimensional(2D)van der Waals(vdW)materials has lately attracted considerable attention from the point of view of both fundamental science and device ***,establishing a detailed and solid understanding of their magnetism is the key first step toward various *** Fe_(3)GeTe_(2)is a representative ferromagnetic(FM)metal in this family,many aspects of its magnetic and electronic behaviors still remain ***,we report our new finding that Fe_(3)GeTe_(2)is a special type of correlated metal known as“Hund metal.Furthermore,we demonstrate that Hund metallicity in this material is quite unique by exhibiting remarkable site dependence of Hund correlation strength,hereby dubbed“site-differentiated Hund metal.Within this new picture,many of the previous experiments can be clearly understood,including the ones that were seemingly contradictory to one another.