L. Vasiliudoloc et al., EVIDENCE OF INCOMMENSURATE STRUCTURAL FLUCTUATIONS IN BI2SR1.9LA0.1CUO6+DELTA, Journal de physique. IV, 3(C2), 1993, pp. 141-144
Using synchrotron X-rays, we evidenced in single crystals of Bi2Sr1.9L
a0.1CuO6+delta the existence of diffuse scattering streaks associated
with the incommensurate modulation. Detailed structure factor calculat
ions show that the diffuse scattering is due to two-dimensional correl
ations of phase defects, which we suggest to be related to the extra o
xygen atoms.