Domain Texture of the Orthorhombic Phase of La2-xBaxCuO4

Bragg coherent diffraction imaging (BCDI) experiments have been carried out at the Advanced Photon Source using a new cryostat system developed to achieve high mechanical stability and low vibrations. We measured the (012)(LTO) Bragg peak which is unique to the low-temperature orthorhombic (LTO) phase of micron- sized crystals of the high- temperature superconductor La2-xBaxCuO4 (LBCO) to study the formation of structural domains. Each time the sample was cooled into the orthorhombic phase, the diffraction pattern of domains was different. This confirms the interpretation of pinning of the lower-temperature charge density Wave domains observed in coherent resonant X- ray speckle correlation analysis experiments.