Haoxiang Li, G Fabbris, A H Said, J P Sun, Yu-Xiao Jiang, J-X Yin, Yun-Yi Pai, Sangmoon Yoon, Andrew R Lupini, C S Nelson, Q W Yin, C S Gong, Z J Tu, H C Lei, J-G Cheng, M Z Hasan, Ziqiang Wang, Binghai Yan, R Thomale, H N Lee, H Miao
The electronic instabilities in CsV3 Sb5 are believed to originate from the V 3d-electrons on the kagome plane, however the role of Sb 5p-electrons for 3-dimensional orders is largely unexplored. Here, using resonant tender X-ray scattering and high-pressure X-ray scattering, we report a rare realization of conjoined charge density waves (CDWs) in CsV3 Sb5 , where a 2 × 2 × 1 CDW in the kagome sublattice and a Sb 5p-electron assisted 2 × 2 × 2 CDW coexist. At ambient pressure, we discover a resonant enhancement on Sb L1 -edge (2s→5p) at the 2 × 2 × 2 CDW wavevectors...
October 26, 2022: Nature Communications