Fig. 1: Commensurate magnetism in twinned YBa2Cu3O6.6 (YBCO-t).
From: Hidden magnetic texture in the pseudogap phase of high-Tc YBa2Cu3O6.6
a Crystal structure of YBa2Cu3O6+x with the CuO chains running along the b-axis (gray shaded arrow) and the CuO2 planes represented by the pink shading. b Scan in momentum space along the H direction across (0.5,0,0.5) showing the magnetic scattering extracted from XYZ polarization analysis (XYZ-PA). The magnetic scattering is fitted by a Gaussian line centered at (0.5,0,0.5). c Background subtracted scan in momentum space along the (0.5,0,L) direction in the non-spin-flip (NSFX) channel. The peaks in the NSFX channel correspond to nuclear scattering from the Ortho-II oxygen chains superstructure. d Q-dependence of the magnetic intensity along the (0.5,0,L) trajectory as extracted from full XYZ-PA in YBCO-t. Data in b–d were measured on 4F1 at 80K with the sample aligned in the (1,0,0)/(0,0,1) scattering plane. Lines are fits by a sum of Gaussian peaks to the data. Error bars represent one standard deviation. Raw data are given in Supplementary Fig. 2.
