Title of article :
High quality Nb-based tunnel junctions for high frequency and digital applications
Author/Authors :
P.N.، Dmitriev, نويسنده , , I.L.، Lapitskaya, نويسنده , , L.V.، Filippenko, نويسنده , , A.B.، Ermakov, نويسنده , , S.V.، Shitov, نويسنده , , G.V.، Prokopenko, نويسنده , , S.A.، Kovtonyuk, نويسنده , , V.P.، Koshelets, نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2003
Pages :
-106
From page :
107
To page :
0
Abstract :
A number of new fabrication techniques are developed and optimized in order to fit the requirements of contemporary superconducting electronics. To achieve ultimate performance of integrated submm receivers with operational frequency of 1 THz, tunnel junctions with AlN tunnel barrier having a R/sub n/S value as low as 1 (omega)(mu)m/sup 2/ have been developed. High quality characteristics of Nb/AlN/Nb tunnel junctions with R/sub j//R/sub n/=16 and R/sub n/S=10 (omega)(mu)m/sup 2/ have been demonstrated. Electron Beam Lithography (EBL) in combination with Chemical Mechanical Polishing (CMP) has been incorporated to produce Nb/AlN/Nb junctions with 0.03 (mu)m/sup 2/ area. A new approach to obtain overdamped Nb/AlO/sub x//Nb tunnel junctions has been proposed and realized. The dependencies of the main parameters of novel junctions on the current density and circuit geometry have been studied. These junctions may have a good potential in Josephson junction arrays and Single-Flux-Quantum applications (RSFQ).
Keywords :
homocysteine , Cretan Mediterranean diet , folate , Ischaemic heart disease
Journal title :
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
Serial Year :
2003
Journal title :
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
Record number :
93979
Link To Document :
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