Anomalous amplitude modes and thinning-induced loss of crystallinity in the kagome metal CsV3Sb5

Gan Liu, Kuanyu He, Qing Li, Hengxin Tan, Yizhou Liu, Jie Xu, Wenna Tang, Kenji Watanabe, Takashi Taniguchi, Libo Gao, 5 Yaomin Dai, 5 Hai-Hu Wen, 5 Binghai Yan, ∗ and Xiaoxiang Xi 5, † National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot 7610001, Israel Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China (Dated: January 17, 2022)