| Budget Amount *help |
¥44,980,000 (Direct Cost: ¥34,600,000、Indirect Cost: ¥10,380,000)
Fiscal Year 2011: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2010: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2009: ¥8,580,000 (Direct Cost: ¥6,600,000、Indirect Cost: ¥1,980,000)
Fiscal Year 2008: ¥28,210,000 (Direct Cost: ¥21,700,000、Indirect Cost: ¥6,510,000)
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| Research Abstract |
We have investigated cuprate and iron-based superconductors by scanning tunneling microscopy/spectroscopy. We found that carriers doped into a Mott insulator, which is a parent material of cuprate superconductors, induce a pseudo-gap state which breaks symmetry of the underlying lattice. We developed a technique which enables us to analyze the phase of superconducting gap. Using this new technique, we determined the superconducting-gap structure of an iron-based superconductor. We have also studied electronic states of quantized vortices in these superconductors.
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