Vestigial Gapless Boson Density Wave Emerging between $\nu =1/2$ Fractional Chern Insulator and Finite-Momentum Supersolid

Hongyu Lu, Han-Qing Wu, Bin-Bin Chen +1

The roton-triggered charge-density-wave (CDW)is widely studied in fractional quantum Hall (FQH) and fractional Chern insulator (FCI) systems, and there also exist field theoretical…