Theorists and experimentalists of diverse fields of research gather to discuss basic problems in quantum mechanics in the light of new technology. This volume collects 51 papers selected from over 200 papers published in the proceedings of the first four ISQMs (since 1983) by distinguished scientists. It includes articles by C.N. Yang, J.A. Wheeler, Y. Nambu, L. Esaki and M.P.A. Fisher, to name just a few, and contains topics ranging from quantum measurements to quantum cosmology.

C axis Current I ~ . The (11 0) thick homoepitaxial film of 320 nm -------~ ~-=-=--==---==--==--==--- shows a very good surface flatness, which --------** sJ;1 0] suggests the unique (110) atomic plane helps 2- A [1 1 OJ dimensional epitaxial growth of YBCO films, and shows excellent high Tc. The resultant 1. 0 surface morphology of YBCO is quite different Q ,. -- R(270)=1. 60 m 0 from the (110) heteroepitaxial films of similar 0 0. 0 " thickness [11). In the case of heteroepitaxy ~ . ,,_. 1. 0 irrespective of c-axis [ 12] or a-axis oriented ~ ~. . ,. R(270)=3. 71 m 0 films [5), only thin...