OXIDE SUPERCONDUCTOR JOSEPHSON JUNCTION ELEMENT AND ITS MANUFACTURING METHOD

Japanese Patent JP3392653

B2

PROBLEM TO BE SOLVED: To obtain an oxide superconductor Josephson junction element which is formed of a needle-shaped oxide superconductor oriented in a or b axis direction and an oxide superconductor oriented in c-axis direction on the specified position of a substrate and is applicable to practical circuits.
SOLUTION: An element is formed of an oxide superconductor 3 oriented in c-axis direction against a substrate 1 and a needle-shaped oxide superconductor 4 oriented in a or b axis direction, and the both sides of the superconductor 4 are interposed with the super conductors 3, and then the crystal grain boundary between the superconductors 3 and 4 is formed of a weak connection part of the Josephson junction. In this case, the c-axis of the superconductor 4 is in a (100) direction of the substrate 1, and the superconductor 3 or in the growth (110) direction which is 45 degrees inclined with respect to the (010) direction.

Yuji Mizuno
Yoshiyasu Ishimaru
Youichi Enomoto

JP23234796A

March 31, 2003

September 02, 1996

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International Superconductivity Industrial Technology Research Center
Sharp Corporation

H01L39/22; H01L39/24; (IPC1-7): H01L39/22; H01L39/24

JP5110150A
JP730162A
JP846256A
JP9121064A
JP5160448A
JP6151986A
JP3228900A

【文献】石丸善康、榎本陽一,YBa2Cu307-δを用いたa/cジョセフソン接合とd波超伝導,固体物理,日本,アグネ技術センター,1996年 6月15日,第31巻第6号,第541頁-第548頁
【文献】Yoshihiro Ishimaru et al.,Observation of Boundary Josephson Junction with d-Wave Pairing Characteristics,Jpn.J.Appl.Phys.,日本,応用物理学会欧文誌刊行会,1995年11月15日,Vol.34(1995)No.11B,pp.L1532-L1535

Shuuki Akita

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