| Budget Amount *help |
¥15,730,000 (Direct Cost: ¥12,100,000、Indirect Cost: ¥3,630,000)
Fiscal Year 2018: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2017: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
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| Outline of Final Research Achievements |
Relation between superconductivity and nematicity, which is spontaneous breaking of lattice rotational symmetry, has been argued in iron-based superconductors. We suppressed nematic phase of FeSe by substituting S for Se and investigated evolutions of band structure and superconducting gap by spectroscopic-imaging scanning tunneling microscopy. We found that the band structure evolves smoothly across the nematic end point whereas the superconducting gap exhibits abrupt change. This result indicates that nematicity plays important role for superconductivity.
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