Pressure-induced topological nodal line semimetal (TNLS) phase in SrAgP

We have studied the effect of external pressure on the crystal structure and electronic properties of SrAgP. We found a structural phase transformation in SrAgP from space group P6₃/mmc (194) to P–62m (189) above 11 GPa. In our density functional theory (DFT) calculations, SrAgP shows a nodal line semimetal like band dispersion in the P–62m (189) space group similar to the well-studied compound CaAgP. We hope that experimentalists will find SrAgP to be an interesting topological nodal line semimetal (TNLS) candidate.