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

Author(s): Jisong Gao, Haijun Cao, Xuegao Hu, Hui Zhou, Zhihao Cai, Qiaoxiao Zhao, Dong Li, Zhicheng Gao, Shin-ichiro Ideta, Kenya Shimada, Peng Cheng, Lan Chen, Kehui Wu, Sheng Meng, and Baojie Feng 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, speci… [Phys. Rev. Lett. 134, 086202] Published Fri Feb 28, 2025