Metal-insulator transition in a correlated bilayer kagome model

doi:10.1103/PhysRevB.110.235144

	Metal-insulator transition in a correlated bilayer kagome model
	Hu, Cong1 ; Qu, Hongbin1 ; Zhang, Xuefeng1 ; Wang, Xiao-Qun 2; Lin, Hai-Qing 2; Li, Gang1,3
	2024-12-19
发表期刊	PHYSICAL REVIEW B
ISSN	2469-9950
EISSN	2469-9969
卷号	110 期号:23
DOI	10.1103/PhysRevB.110.235144
摘要	Correlated bilayer systems, fundamental to various transition metal compounds, exhibit intriguing phenomena due to the intrinsic competition between interlayer and intralayer couplings mediated by strong Coulomb interactions. Utilizing dynamical mean-field theory, we present a comprehensive investigation of the bilayer Hubbard model on a kagome lattice. By integrating multiple estimators, including double occupancy (Docc), -beta G(beta /2), the local Green's function ImGloc(i omega n), the local self-energy Imloc(i omega n), the dimer Green's function ImGd(i omega n), and the dimer self-energy Imd(i omega n), we classify various phases and their transitions or crossovers. In addition to the expected Mott state at large U/t and small t'/t and the correlated band insulating state at small U/t but large t'/t, we identify an emergent phase where electrons lose long-range transport capability but retain mobility between the two layers. The bilayer kagome Hubbard model, with its rich phase diagram, provides valuable insights into numerous material compounds. Our theoretical engineering of Mott states offers significant implications for interpreting the diverse electronic and magnetic phenomena observed in these systems.
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收录类别	SCI ; EI ; SCIE ; SCOPUS
语种	英语
资助项目	National Key R&D Program of China[2022YFA1402703] ; Shanghai 2021-Fundamental Research Area[21JC1404700] ; National Natural Science Foundation of China["92365204","11874263"] ; Sino-German Mobility program[M-0006]
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:001389549100006
出版者	AMER PHYSICAL SOC
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/452413
专题	物质科学与技术学院物质科学与技术学院_PI研究组_李刚组物质科学与技术学院_博士生
通讯作者	Li, Gang
作者单位	1.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 2.Zhejiang Univ, Sch Phys, Hangzhou 310027, Zhejiang, Peoples R China 3.ShanghaiTech Univ, ShanghaiTech Lab Topol Phys, Shanghai 201210, Peoples R China
第一作者单位	物质科学与技术学院
通讯作者单位	物质科学与技术学院; 上海科技大学
第一作者的第一单位	物质科学与技术学院
推荐引用方式 GB/T 7714	Hu, Cong,Qu, Hongbin,Zhang, Xuefeng,et al. Metal-insulator transition in a correlated bilayer kagome model[J]. PHYSICAL REVIEW B,2024,110(23).
APA	Hu, Cong,Qu, Hongbin,Zhang, Xuefeng,Wang, Xiao-Qun,Lin, Hai-Qing,&Li, Gang.(2024).Metal-insulator transition in a correlated bilayer kagome model.PHYSICAL REVIEW B,110(23).
MLA	Hu, Cong,et al."Metal-insulator transition in a correlated bilayer kagome model".PHYSICAL REVIEW B 110.23(2024).