| Budget Amount *help |
¥44,590,000 (Direct Cost: ¥34,300,000、Indirect Cost: ¥10,290,000)
Fiscal Year 2021: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Fiscal Year 2020: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Fiscal Year 2019: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Fiscal Year 2018: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
Fiscal Year 2017: ¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
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| Outline of Final Research Achievements |
Utilizing defects created by irradiating high-energy particles into iron-based superconductors, we aimed at elucidating the gap structure in the basic side and enhancement of critical current density (Jc) in the applied side.
As a result, we obtained information that the order parameter in iron-based superconductors is not consistent with that which changes sign on different Fermi surfaces.
On the other hand, we enhanced Jc by a factor of ~10 compared with pristine crystals by introducing point and/or columnar defects. In that process, we discovered “anomalous peak effect” in samples with splayed columnar defects. Furthermore, we fabricated round wires of iron-based superconductors, and achieved Jc = 54 kA/cm2 at 4.2 K under 10 T. Utilizing those wires, we constructed a magnet and generated a magnetic field as high as 3.6 kOe.
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