| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Outline of Final Research Achievements |
We succeeded in growth of RE(O,F)BiS2 single crystals with high superconductivity anisotropy, which is suitable for fabricating Josephson junctions. We examined the annealing effects on superconductivity properties at high temperatures, in order to clarify the availability of the cross-junction method in this system. Since superconductivity survived when annealed at T < 400 degree C, we tried to fabricate cross junctions of Nd(O,F)BiS2 crystals by annealing at 400 degree C. However, superconducting pass has not been created using this process so far.
To explore another method for fabrication of RE(O,F)BiS2 Josephson junctions, we examined the element substitution effects on superconductivity of RE(O,F)BiS2. The non-superconducting phases were created by Sb- or RE-substitutions, which will be useful for fabricating superconducting/non-superconducting/superconducting junctions with this system. In addition, we discovered new superconductor, Sn1-xAgxTe during this project.
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