High-order van Hove singularities and nematic instability in the kagome superconductor CsTi${}_3$Bi${}_5$

Bikash Patra, Amrita Mukherjee, Bahadur Singh

ATi${}_3$Bi${}_5$ (A = Cs or Rb) are emerging topological kagome metals that exhibit superconductivity and nematicity without intertwining translational symmetry-breaking charge orders…