JPS5452990A - Superconductive josephson element - Google Patents
Superconductive josephson elementInfo
- Publication number
- JPS5452990A JPS5452990A JP11905377A JP11905377A JPS5452990A JP S5452990 A JPS5452990 A JP S5452990A JP 11905377 A JP11905377 A JP 11905377A JP 11905377 A JP11905377 A JP 11905377A JP S5452990 A JPS5452990 A JP S5452990A
- Authority
- JP
- Japan
- Prior art keywords
- barrier
- alloy
- film
- group metal
- compound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: To enhance the voltage-current characteristics as well as to avoid the deterioration due to the heat cycle for the Nb-barrier-Nb Josephson element, by using the oxide of Ti, Zr, Hf, etc. with the film thickness set to 1∼100nm for the barrier.
CONSTITUTION: Superconductive film 2 of the first layer of the compound formed with Nb, Nb alloy and Nb-group metal is evaporated on substrate 1 through heating of the electron beam within a vacuum device, and the surface of film 2 is covered with barrier 3 of the oxide composed of Ti, Zr, Hf, etc. with the film thickness set to 1∼100nm. Furtheremore, second layer superconductive film 4, composed of the compound of Nb, Nb alloy and Nb-group metal or the compound of Pb, Pb alloy and Pb-group metal, is coated on barrier 3. As a result, the voltage-current characteristics can be improved greatly for the element, thus reducing the leak current caused by the microshort down to nearly zero.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11905377A JPS5452990A (en) | 1977-10-05 | 1977-10-05 | Superconductive josephson element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11905377A JPS5452990A (en) | 1977-10-05 | 1977-10-05 | Superconductive josephson element |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5452990A true JPS5452990A (en) | 1979-04-25 |
JPS6123674B2 JPS6123674B2 (en) | 1986-06-06 |
Family
ID=14751730
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11905377A Granted JPS5452990A (en) | 1977-10-05 | 1977-10-05 | Superconductive josephson element |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5452990A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5477061A (en) * | 1990-09-20 | 1995-12-19 | Fujitsu Limited | Josephson device having an overlayer structure with improved thermal stability |
-
1977
- 1977-10-05 JP JP11905377A patent/JPS5452990A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5477061A (en) * | 1990-09-20 | 1995-12-19 | Fujitsu Limited | Josephson device having an overlayer structure with improved thermal stability |
Also Published As
Publication number | Publication date |
---|---|
JPS6123674B2 (en) | 1986-06-06 |
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