| Budget Amount *help |
¥15,340,000 (Direct Cost: ¥11,800,000、Indirect Cost: ¥3,540,000)
Fiscal Year 2017: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2016: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2015: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000)
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| Outline of Final Research Achievements |
We have performed photoemission spectroscopy with several modes of REO1-xFxBiS2 (RE=Rare Earth) in order to elucidate mechanism of superconductivity of BiS2 based layered superconductors. From the direct measurement of Fermi surface and band structure using ultraviolet ARPES on LaO1-xFxBiS2(x=0.23,0.5), we have elucidated close correlation between density of states at the Fermi level and Tc. From soft x-ray resonant photoemission spectroscopy of CeO1-xFxBiS2, where coexistence of superconductivity and magnetism has been reported, we have revealed that Ce 4f electrons do not play major role in the electron conduction. We also obtained other results. These results are crucial for understanding the mechanism of the superconductivity of BiS2 based layered superconductors
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