Kagome Materials I: SG 191, ScV${}_6$Sn${}_6$. Flat Phonon Soft Modes and Unconventional CDW Formation: Microscopic and Effective Theory

Haoyu Hu, Yi Jiang, Dumitru Călugăru +6

Kagome Materials with flat bands exhibit wildly different physical properties depending on symmetry group, and electron number. For the case of ScV${}_6$Sn${}_6$ in space group 191, we…