Commensurate lattice distortion in the layered titanium oxypnictides Na${}_2$Ti${}_{2}P{n}_2$O ($Pn=$ As, Sb) determined by X-ray diffraction

N. R. Davies, R. D. Johnson, A. J. Princep +12

We report single crystal X-ray diffraction measurements on Na${}_2$Ti${}_{2}P{n}_2$O ($Pn$ = As, Sb) which reveal a charge superstructure that appears below the density wave transition…