Intermediate spin phase of charge-stripe ordered La1.63Sr0.37NiO4.
Striking features of the temperature evolution of the magnetism of charge-stripe ordered La2NiO4.11 have been revealed by high resolution cold neutron scattering. A wave vector offset that is not understood by theory, and a kink in the magnetic excitation dispersion near the spin ordering temperature. We argue that our findings indicate an intermediate spin phase, that will be effected by the changing symmetry observed in the magnetism of La2-xSrxNiO4 above one third doping. The offset between magnetic order and magnetic excitations is highly similar to that reported recently in an underdoped La-based cuprate[3]. We propose to use the changing symmetry of the temperature dependence above one third doping in charge-stripe ordered La2-xSrxNiO4 to further illuminate the ordering process of this charge-stripe ordered material.
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P. G. Freeman; GIBLIN Sean; HANSON Jack; PRABHAKARAN Dharmalingam and RAYMOND Stephane. (2018). Intermediate spin phase of charge-stripe ordered La1.63Sr0.37NiO4.. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-02-538
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