Spin and charge fluctuations in O-doped nickelates with hole concentration close to 0.5
The confirmation of stripes order in cuprates materials inspired speculations about the role fluctuating stripes in the superconducting pairing mechanism. Isostructural hole-doped nickelates, are a strongly correlated electron system that also exhibits charge order and in which both the spin and charge fluctuations could be detected. It has been shown recently the coexistence of oxygen and magnetic ordering below Tn in a Nd2NiO4.1 with magnetic satellite reflections that adopt exactly the same modulation vectors as found for the oxygen ordering. Proving evidence of such coexistence for other oxygen doping might support the picture of pinning of magnetic order to oxygen order. In this, for the nh=1/2 hole doping, the spin order is a 2D checkerboard pattern where all the nearest-neighbour sites of the spins are occupied by holes. It would then be interesting collecting the spin and charge order fluctuations in Nd2NiO4.23 close to such ordering. In this way, we can unveil the behaviour of spin and charge fluctuation in the heavily over-doped region, much less explored, and correlate result with oxygen ordering and with the annexed lattice instabilities found in this composition.
The data is currently only available to download if you are a member of the proposal team.
The recommended format for citing this dataset in a research publication is in the following format:
PIOVANO Andrea; BOEHM Martin; CERETTI Monica; PAULUS Werner and SCHMIDT Wolfgang F. (2023). Spin and charge fluctuations in O-doped nickelates with hole concentration close to 0.5. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-01-1768
This data is not yet public
This data is not yet public
ILL has partnered with DataCite as the registration agency
for data persistent identifiers.