| Budget Amount *help |
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2018: ¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
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| Outline of Final Research Achievements |
We observed Luttinger liquid behavior in InAs wires that hold strong spin-orbit interaction. From the experimental and theoretical aspects, we proved that the spin-orbit interaction causes little effect on the Luttinger liquid. In a double InAs nanowire Josephson junction, we detected a ballistic Cooper pair splitting and evaluated a gap energy of the nonlocal superconducting proximity effect. In a single InAs nanowire Josephson junction, we discovered the half-integer Shapiro steps derived from the ballistic transport of the nanowire and revealed that the supercurrent enhancement invoked by the magnetic field is assigned to the electron cooling due to the quasiparticle trapping at the vortex cores. Then we observed the integer Shapiro steps in the topological insulator Josephson junctions and obtained the important knowledge for suitable device structures to hunt the Majorana Fermions.
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