Flat Bands and Temperature-Driven Phase Transition in Quasi-One-Dimensional Zigzag Chains

Flat-band materials have garnered extensive attention due to their captivating properties associated with strong correlation effects. While flat bands have been discovered in several types of 2D materials, their existence in 1D systems remains elusive. Here, we propose a 1D frustrated lattice, specifically the 1D zigzag lattice, as a platform for hosting flat bands. This lattice can be experimentally realized by growing CuTe chains on Cu(111). The presence of flat bands was confirmed by tight-binding model analysis, first-principles calculations, and angle-resolved photoemission spectroscopy measurements. In addition, we discovered a temperature-driven phase transition at approximately 250 K. Detailed analyses demonstrate that the system has a Tomonaga-Luttinger liquid behavior, accompanied by spin-charge separation effects. Our work unveils new prospects for investigating strongly correlated electron behaviors and topological properties in the 1D limit.

Authors

Institutions

Publication Details

Journal
Physical Review Letters
Published
2025-02-28
DOI
https://doi.org/10.1103/physrevlett.134.086202
Citations
5
Primary Topic
Quantum and electron transport phenomena
Type
article
Field-Weighted Citation Impact
6.23

Funders

Controls
|||
ALL TIME
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
article

Flat Bands and Temperature-Driven Phase Transition in Quasi-One-Dimensional Zigzag Chains

S. Ideta, Zhihao Cai, Peng Cheng, Baojie Feng et al.
5 citations
Physical Review Letters
Quantum and electron transport phenomena
6.23
article

Flat Bands and Temperature-Driven Phase Transition in Quasi-One-Dimensional Zigzag Chains

S. Ideta, Zhihao Cai, Peng Cheng, Baojie Feng, Jisong Gao, K. Shimada, Kehui Wu, Xuegao Hu, Lan Chen, Dong Li, Sheng Meng, Hui Zhou, Qiaoxiao Zhao, Zhicheng Gao, Haijun Cao
article en
5 citations

Abstract

Flat-band materials have garnered extensive attention due to their captivating properties associated with strong correlation effects. While flat bands have been discovered in several types of 2D materials, their existence in 1D systems remains elusive. Here, we propose a 1D frustrated lattice, specifically the 1D zigzag lattice, as a platform for hosting flat bands. This lattice can be experimentally realized by growing CuTe chains on Cu(111). The presence of flat bands was confirmed by tight-binding model analysis, first-principles calculations, and angle-resolved photoemission spectroscopy measurements. In addition, we discovered a temperature-driven phase transition at approximately 250 K. Detailed analyses demonstrate that the system has a Tomonaga-Luttinger liquid behavior, accompanied by spin-charge separation effects. Our work unveils new prospects for investigating strongly correlated electron behaviors and topological properties in the 1D limit.

Physical Review LettersVol. 134(8)
Hiroshima University (JP), Chinese Academy of Sciences (CN), Peking University (CN), Songshan Lake Materials Laboratory (CN), FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic (CZ), Institute of Physics (CN), University of Chinese Academy of Sciences (CN)
National Natural Science Foundation of China, Chinese Academy of Sciences, Beijing Municipal Natural Science Foundation, National Key Research and Development Program of China
Climate action
Openalex Percentile: Top 4%
Quantum and electron transport phenomena
6.23
DOIOpen Access PDFOpenAlex
AI Navigator

Ask Laika to Summarize, Analyze, and Connect papers live on the map.

Summarize Papers & Methodologies

Extract key findings, datasets, and comparative methods across publications.

Benchmark Rankings & Visual Analytics

Rank top research institutions, authors, funders, topics, and journals by Field-Weighted Citation Impact (FWCI) and paper volume with instant charts.

Connect Distant Disciplines

Bridge topological clusters on the map to find hidden collaborative intersections.