Anisotropic superconducting device and fluxon device
AssigneesAgency of Industrial Science and Technology, Ministry of International Trade & Industry
InventorsHiroshi Akoh, Hiroshi Sato
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Abstract
An anisotropic superconductor junction device consisting of a lower superconducting layer and an upper superconducting layer separated by a barrier layer, in which the upper and lower superconducting layers and the barrier layer each have a (103) crystal orientation in which the c axis is arranged in the same direction at an angle of 45 degrees relative to the plane of the junction.
Claims5
An anisotropic multi-layered superconductor junction device having a multi-layered Josephson junction, comprising:
- a crystalline lower superconducting layer of YBaCuO having a lower layer crystal c axis;
- a crystalline upper superconducting layer of YBaCuO having an upper layer crystal c axis;
- a crystalline middle semiconductive barrier layer of PrBaCuO disposed between and in contact with the lower superconducting layer and the upper superconducting layer and having a middle layer crystal c axis;
- wherein the lower layer crystal c axis, middle layer crystal c axis, and upper layer crystal c axis, are all parallel to one another and at a 45 degree angle relative to the barrier layer of PrBaCuO.
An anisotropic multi-layered superconductor junction device having a multi-layered Josephson junction, comprising:
- a lower superconducting layer and an upper superconducting layer of YBaCuO with a crystal orientation in which a c axis is arranged in a same direction at an angle of 45 degrees relative to a junction plane of said multi-layered Josephson junction;
- and
- a semiconductive barrier layer of PrBaCuO disposed between the lower and upper superconducting layers, said barrier layer having a crystal orientation in which a c axis is arranged at an angle of 45 degrees relative to said junction plane, in a direction that is the same as the c axis direction of said lower superconducting layer.
An anisotropic multi-layered superconducting device having a multi-layered Josephson junction and used as a Josephson transmission line for fluxon movement in a fluxon device, comprising:
- a lower superconducting layer and an upper superconducting layer of YBaCuO with a crystal orientation in which a c axis is arranged in a same direction at an angle of 45 degrees relative to a junction plane of said multi-layered Josephson junction;
- and
- a semiconductive barrier layer of PrBaCuO disposed between the lower and upper superconducting layers, said barrier having a crystal orientation in which a c axis is arranged at an angle of 45 degrees relative to the junction plane of said multi-layered Josephson junction, in a direction that is the same as the c axis direction of said lower superconducting layer;
- wherein a direction of fluxon movement is parallel to Cu-O planes of the YBaCuO upper and lower superconducting layers and PrBaCuO barrier layer, and is also parallel to said junction plane.
An anisotropic multi-layered superconducting device having a multi-layered Josephson junction and used as a Josephson transmission line for fluxon movement in a fluxon device, comprising:
- a crystalline lower superconducting layer of YBaCuO having a lower layer crystal c axis;
- a crystalline upper superconducting layer of YBaCuO having an upper layer crystal c axis;
- a crystalline middle semiconductive barrier layer of PrBaCuO disposed between and in contact with the lower superconducting layer and the upper superconducting layer and having a middle layer crystal c axis;
- wherein the lower layer crystal c axis, middle layer crystal c axis, and upper layer crystal c axis, are all parallel to one another and at a 45 degree angle relative to the barrier layer of PrBaCuO.
- wherein a direction of fluxon movement is
- (1) parallel to Cu-O planes of the YBaCuO superconducting layers and of the PrBaCuO barrier layer and
- (2) parallel to said barrier layer.
Dependencies are inferred from the claim text.