| Budget Amount *help |
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2018: ¥13,910,000 (Direct Cost: ¥10,700,000、Indirect Cost: ¥3,210,000)
|
|---|
| Outline of Final Research Achievements |
Purposes of this study are to realize ruthenium oxide superconductors by epitaxy technique and to elucidate their superconducting states using thin films and junctions. We have succeeded in growing Sr2RuO4 superconducting thin films with a transition temperature exceeding 1.2K, and have discussed possible superconducting symmetries which can be realized in two-dimensional limit by precisely measuring the upper critical magnetic field. We have also succeeded in preparing Sr2RuO4-Sr2RuO4 Josephson junctions, and have clarified that the magnetic field dependence of the Josephson critical current maintains time-reversal symmetry. Furthermore, by growing high-quality RuO2 single crystal thin films on various substrates and controlling epitaxial strain from the substrates, we have succeeded in realizing superconductivity at 1.7 K in RuO2.
|
