Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Josephson effect and macroscopic quantum interference in high-T/sub c/ superconducting thin-film weak links at 77 K
AU - Golovashkin, A. I.
AU - Gudkov, A. L.
AU - Krasnosvobodtsev, S. I.
AU - Kuzmin, L. S.
AU - Likharev, K. K.
AU - Maslennikov, Y. V.
AU - Pashkin, Y. A.
AU - Pechen, E. V.
AU - Snigirev, O. V.
PY - 1989
Y1 - 1989
N2 - 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.
AB - 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.
KW - barium compounds
KW - high-temperature superconductors
KW - Josephson effect
KW - sputtered coatings
KW - superconducting junction devices
KW - superconducting thin films
KW - yttrium compounds
KW - high temperature superconductor
KW - macroscopic quantum interference
KW - superconducting thin-film weak links
KW - Dayem microbridges
KW - photolithography
KW - laser sputtering
KW - ceramic targets
KW - critical current
KW - normal resistance
KW - plasma etching
KW - Shapiro steps
KW - microwave radiation
KW - double microbridge structures
KW - 77 K
KW - SrTiO/sub 3/
KW - LiNbO/sub 3/
KW - YBa/sub 2/Cu/sub 3/O/sub y/
KW - Interference
KW - Sputtering
KW - Superconducting microwave devices
KW - SQUIDs
KW - Lithography
KW - Superconducting thin films
KW - Copper
KW - Ceramics
KW - Critical current
U2 - 10.1109/20.92443
DO - 10.1109/20.92443
M3 - Journal article
VL - 25
SP - 943
EP - 945
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
SN - 0018-9464
IS - 2
ER -