Evidence for tilt disorder at intermediate-r ?
x=0.0 data have large (5o) tilts
x=0.25 data have ~0o tilts
On the average, x=0.1 has intermediate (3o) tilts
A mixture of heavily tilted and untilted PDFs reproduce the x=0.1 data (top panel) even though the heavily tilted and untilted PDFs are themselves quite different (bottom panel).
The PDF of doped La2-xSrxCuO4 reflects tilt disorder, consistent with charge stripes, in the local structure
Bozin et al. Phys. Rev. B 59 4445 (1999).