Josephson device, method of forming Josephson device and superconductor circuit
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United States of America Patent
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Oct 4, 2011
Grant Date -
Feb 28, 2008
app pub date -
Aug 23, 2007
filing date -
Aug 23, 2006
priority date (Note) -
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Abstract
as a main component, where an element RE is at least one element selected from a group consisting of Y, La, Pr, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb and Lu, and an element AE is at least one element selected from a group consisting of Ba, Sr and Ca. The barrier layer is made of a material that includes the element RE, the element AE, Cu and oxygen, where in cations within the material forming the barrier layer, a Cu content is in a range of 35 At. % to 55 At. % and an RE content is in a range of 12 At. % to 30 At. %, and the barrier layer has a composition different from compositions of the first and second superconducting electrode layers.
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