Correlated flat bands and quantum spin liquid state in a cluster Mott insulator
2023-12
发表期刊COMMUNICATIONS PHYSICS
ISSN2399-3650
EISSN2399-3650
卷号6期号:1
发表状态已发表
DOI10.1038/s42005-023-01292-z
摘要

Flat bands are rare in pristine solids and are unstable against electronic correlations or other types of long-range order. Unlike atomic-scale Hubbard systems or Moiré materials, where electronic correlations are either localized or long-ranged, pristine flat band systems with short-range interactions that do not break symmetry spontaneously are less known and intriguing. These systems could bridge the gap between atomic Mott insulators and Moiré correlated insulators, offering a unique platform to explore their mysterious relation. Using an analytical analysis, further verified by numerical calculations, we show that monolayer Nb3Cl8 is a unique flat band system with short-range interactions. We present clear evidence that it is a cluster Mott insulator, which nicely explains the electronic structure observed in angle-resolved photoemission spectroscopy. We further propose that monolayer Nb3Cl8 may constitute a rare example of molecular quantum spin liquid with flat bands. © 2023, The Author(s).

关键词Chlorine compounds Electronic structure Monolayers Niobium compounds Photoelectron spectroscopy Quantum theory Atomic scale Band systems Electronic correlation Flat band Hubbard systems Long range orders Mott insulators Quantum spin liquid Short range interactions Spin liquid state
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收录类别SCI ; EI
语种英语
资助项目National Key Ramp ; D Program of China[2022YFA1402703] ; National Natural Science Foundation of China[11874263] ; Shanghai Technology Innovation Action Plan[M-0006] ; Sino-German Mobility program[12147124] ; Postdoctoral Special Funds for Theoretical Physics of the National Natural Science Foundation of China[21JC1404700] ; null[20DZ1100605]
WOS研究方向Physics
WOS类目Physics, Multidisciplinary
WOS记录号WOS:001029584400001
出版者Nature Research
EI入藏号20232914423185
EI主题词Mott insulators
EI分类号413.1 Electric Insulating Materials ; 931.4 Quantum Theory ; Quantum Mechanics
原始文献类型Journal article (JA)
引用统计
文献类型期刊论文
条目标识符https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/317360
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_硕士生
物质科学与技术学院_博士生
共同第一作者Zhang, Xuefeng
通讯作者Li, Gang
作者单位
1.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
2.Shanghai Polytech Univ, Coll Arts & Sci, Shanghai 201209, Peoples R China
3.Zhejiang Univ, Sch Phys, Hangzhou 310027, Zhejiang, Peoples R China
4.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, Jiayu,Zhang, Xuefeng,Hu, Cong,et al. Correlated flat bands and quantum spin liquid state in a cluster Mott insulator[J]. COMMUNICATIONS PHYSICS,2023,6(1).
APA Hu, Jiayu.,Zhang, Xuefeng.,Hu, Cong.,Sun, Jian.,Wang, Xiaoqun.,...&Li, Gang.(2023).Correlated flat bands and quantum spin liquid state in a cluster Mott insulator.COMMUNICATIONS PHYSICS,6(1).
MLA Hu, Jiayu,et al."Correlated flat bands and quantum spin liquid state in a cluster Mott insulator".COMMUNICATIONS PHYSICS 6.1(2023).
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