%0 Journal Article %A Ramamoorthy Ramesh %A D.M Hwang %A T Venkatesan %A T.S Ravi %A L Nazar %A A Inam %A X.D Wu %A B Dutta %A G Thomas %A A.F Marshall %A T.H Geballe %B Science %D 1990 %G eng %P 57-59 %R 10.1126/science.247.4938.57 %T Direct observation of structural defects in laser-deposited superconducting Y-Ba-Cu-O thin films %V 247