Abstract
We have studied the incommensurate-ordered phase in overdoped by resonant x-ray diffraction at the Mn edge. Weak resonant superlattice and reflections of the tetragonal structure were found below . The energy, azimuth angle, and polarization dependencies of the resonant scattering have revealed sinusoidal modulations of the oxygen motions that are transverse and longitudinal to the tetragonal [110] direction. This result discards -like stripe-type order but point to a charge-density-modulation picture.
- Received 11 July 2012
DOI:https://doi.org/10.1103/PhysRevLett.109.107202
© 2012 American Physical Society