Prediction of nodal-line semimetals in 2D ScX (X = P, As) with high stability and considerable fermi velocities

Synthesis and characterisation of Cu2Ge, a new two-dimensional Dirac nodal line semimetal

“…While a recent concept, 2D DNLs have been predicted in a growing variety of systems, such as 2D honeycomb kagome lattice [9], in 2D compounds X 2 Y (X = Ca, Sr and Ba; Y = As, Sb, and Bi) [10], X 2 YZ 4 (X = K, Cs, Rb, Y = Cr, Cu, Z = Cl, F) [11], and MX (M = Pd, Pt; X = S, Se, Te) [12], in 2D Lieb lattices [13], in hydrogenated boron layers [14,15], MgB 2 [16], MnN [17], B 2 C [18], black phosphorous films [19], C 4 N 4 [20], ScX (X = P, As) [21], CuMg 2 [22], CuSe [23], Cu 2 Si [6] and monolayer Cu 2 Ge, Fe 2 Ge and Fe 2 Sn [24].…”