Role of interstitial oxygen ordering on the spin excitation of Pr2-xSrxNiO4+d

Dynamics of charge and spin stripe in 214-type nickelets (La2-xSrxNiO4+d) have been investigated intensively in last two decades as similar electronic ordering was found in iso-structural high-Tc superconducting cuprates. What is still missing the limelight, is the highly oxygen doped compound. For the first time we evidence that different spin stripe modulations are directly scaled with the respective complex oxygen ordered supercell in the oxygen dope sample. We aim to verify the role of interstitial oxygen ordering on the spin microstructure and hence on the corresponding spin excitation in different oxygen dope samples.