J. Phys. Colloques 50 (1989) C8-487-C8-488
DIRECT OBSERVATION OF ATOMIC IMAGE OF HIGH Tc SUPERCONDUCTORS BY FIELD ION MICROSCOPYQ.J. GAO1, Z.X. ZHANG2, S.Y. XU1, S.Q. FENG1 et S.Z. WANG1
1 Department of Physics, Beijing University, Beijing 100871, P.R. China
2 Department of Radio-Electronics, Beijing University, Beijing 100871, P. R. China
The structure of superconducting Bi2Sr2Ca1Cu2O8 + δ has been examined in atomic detail by field ion microscopy. According to our results we suggest that only the copper end planes are preferentially imaging in superconducting Bi2Sr2Ca1Cu2O8+δ. The atomic image of YBa2Cu3O7-x - covered tungsten tip has also been examined.