Abstract
A charge modulation has recently been reported in (Y,Nd)BaCuO [G. Ghiringhelli et al., Science 337, 821 (2012)]. Here we report Cu edge soft x-ray scattering studies comparing the lattice modulation associated with the charge modulation in YBaCuO with that associated with the well-known charge and spin stripe order in LaBaCuO. We find that the correlation length in the CuO plane is isotropic in both cases, and is Å for LaBaCuO and Å for YBaCuO. Assuming weak interplanar correlations of the charge ordering in both compounds, we conclude that the order parameters of the lattice modulations in LaBaCuO and YBaCuO are of the same order of magnitude.
- Received 23 May 2013
DOI:https://doi.org/10.1103/PhysRevB.88.024505
©2013 American Physical Society