Observation of flat band, Dirac nodal lines and topological surface states in Kagome superconductor CsTi3Bi5
Abstract Kagome lattices of various transition metals first due helmet are versatile platforms for achieving anomalous Hall effects, unconventional charge-density wave orders and quantum spin liquid phenomena due to the strong correlations, spin-orbit coupling and/or magnetic interactions involved in such a lattice.Here, we use laser-based angle-re