Is stripe incommensurability in La_{2-x}Sr_xCoO_4 proportional to doping?
arXiv:1710.06773
Abstract
The longstanding notion of stripe incommensurability being proportional to doping, δ(x) ~ x, in lanthanum transition-metal oxides, La_{2-x}Sr_xTmO_4 (Tm = Cu, Ni, Co), is partly borne out by experiment but also plagued with exceptions. Future neutron-scattering experiments on cobaltates could provide a clear distinction whether a linear or square-root dependence, δ(x) ~ sqrt(x - x_0), is valid.
8 pages, 4 figures