Golovashkin, A. I. and Gudkov, A. L. and Krasnosvobodtsev, S. I. and Kuzmin, L. S. and Likharev, K. K. and Maslennikov, Y. V. and Pashkin, Y. A. and Pechen, E. V. and Snigirev, O. V. (1989) Josephson effect and macroscopic quantum interference in high-T/sub c/ superconducting thin-film weak links at 77 K. IEEE Transactions on Magnetics, 25 (2). pp. 943-945. ISSN 0018-9464
Full text not available from this repository.Abstract
The authors studied the properties of single and double superconducting weak links (Dayem microbridges) fabricated by direct photolithography from thin films of 1-2-3 copper oxides, deposited on SrTiO/sub 3/ and LiNbO/sub 3/ substrates by laser sputtering of ceramic targets. Values of critical current I/sub c/ and normal resistance R/sub n/ of the weak links could be altered by plasma etching of the structures. I/sub c/R/sub n/ products up to 100 mu V were achieved, and well-pronounced Shapiro steps under 8-GHz microwave radiation were observed at 77 K. Macroscopic quantum interference was clearly registered in double microbridge structures at the same temperature.