Emergent Edge Modes in Shifted Quasi-One-Dimensional Charge Density Waves
Emergent Edge Modes in Shifted Quasi-One-Dimensional Charge Density Waves
We propose and study a two-dimensional phase of shifted charge density waves (CDW), which is constructed from an array of weakly coupled 1D CDW wires whose phases shift from one wire to the next. We show that the fully gapped bulk CDW has topological properties, characterized by a nonzero Chern …