Superconducting and non-superconducting oxide multilayers

✍ Scribed by M.S. Hegde; K.M. Satyalakshmi; S.Sundar Manoharan; Dhananjay Kumar

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 623 KB
• Volume: 32
• Category: Article
• ISSN: 0921-5107
• DOI: 10.1016/0921-5107(95)80026-3

✦ Synopsis

An overview of perovskite-related metallic oxides and their thin films is presented with an emphasis on the epitaxial growth of LaNiO 3 thin films on a variety of substrates. Using these films as metallic barrier layers, YBa2Cu307_6/LaNiO3/YBa2Cu307_6/ SrTiO 3 trilayer superconductor-normal metal (metallic oxide)-superconductor junctions have been fabricated. The results indicate that the coherence length of electrons in the normal metal LaNiO 3 region is of the order of 125 A. Besides, the growth of a-axisoriented LaBa2Cu2.sNio.207 + 6 metallic thin films is reported which can be used as a promising template to grow a-axis-oriented overlayers required preferably in the fabrication of multilayer devices.