Le Bolloc'h D, Ravy S, Dumas J, Marcus J, Livet F, Detlefs C, Yakhou F, Paolasini L
Laboratoire de Physique des Solides, CNRS-UMR 8502, Bâtiment 510, Université Paris-sud, 91405 Orsay cedex, France.
Phys Rev Lett. 2005 Sep 9;95(11):116401. doi: 10.1103/PhysRevLett.95.116401. Epub 2005 Sep 7.
Coherent x-ray diffraction experiments have been performed on high quality crystals of the charge density wave (CDW) system K0.3MoO3. The satellite reflections associated with the CDW have been measured as a function of the 20-microm-diameter beam position. For some positions, regular fringes have been observed. We show that this observation is consistent with the presence of a single CDW dislocation. Beyond charge density wave systems, this experiment shows that coherent x-ray diffraction is a suitable tool to probe topological defects embedded in the bulk.