In-situ epitaxial growth of BiSr-Ca-CuO films and superlattices by MBE using an oxygen radical beam - Furukawa, H.; Tokunaga, S.; Nakao, M. (Elsevier)
Epitaxial BiSr-aCuO thin films and superlattices have been grown on MgO (100) and SrTiO"3 (100) substrates by the MBE technique using an oxygen radical beam produced by RF excitation. During the first deposition of Ca atomic layers on MgO, the epitaxial direction was found rotated by 45^o between Ca-free and Ca-containing phases. Superlattices of Bi"2Sr"2caCu"2O"8 (2212)/BiSr"2CuO"6 (2201). in which 2212 layers with a thickness of m caxis half unit cells are separated by nonsuper-conducting 2201 layers of n half unit cells, were grown by this technique. We found that the superlattices exhibit similar superconductivity independent of both the m and n half-unit-cell numbers, indicating the two dimensionality of this superconductor..
http://linkinghub.elsevier.com/retrieve/pii/0921-4534(91)91166-2
Keywords: U