| Budget Amount *help |
¥17,290,000 (Direct Cost: ¥13,300,000、Indirect Cost: ¥3,990,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2010: ¥13,390,000 (Direct Cost: ¥10,300,000、Indirect Cost: ¥3,090,000)
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| Research Abstract |
In order to clarify superconducting paring symmetry and its glue in Fe-based supeconductor Ba1-xKxFe2As2, I performed NMR/NQR measurements of this system through pressure and carrier control. Antiferromagnetic fluctuations are considered to be important in this system and NMR and NQR are quite sensitive to the fluctuations. I clarified that antiferromagmetic fluctuations are surpressed by carrier doping but that they exist in the range of almost all the carrier doping level. Furthermore, superconducting gap is characterized by multiple gap and the systematic change of superconducting gap can be understood by the change of Fermi surface. In NMR/NQR sutdy under pressure, I have succeeded in increasing the signal intensity by using nonmagnetic and insulating anvil of ZrO2.
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