| Budget Amount *help |
¥19,370,000 (Direct Cost: ¥14,900,000、Indirect Cost: ¥4,470,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2011: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2010: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2009: ¥12,220,000 (Direct Cost: ¥9,400,000、Indirect Cost: ¥2,820,000)
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| Research Abstract |
We have constructed low-energy ultrahigh-resolution photoemission spectrometer to elucidate the bulk electronic states in the vicinity of the Fermi level in high-temperature cuprate superconductors, and have performed high-resolution angle-resolved photoemission spectroscopy (ARPES) studies of cuprates and related materials. We have found an existence of two different types of pseudogaps above superconducting transition temperature in single- and multi-layered Bi-based cuprates by the systematic temperature- and momentum-dependent ARPES measurements. In addition, we have clarified the electronic states of related materials, such as cobalt oxides and iron-based superconductors, and revealed characteristic similarities/dissimilarities among these superconductors, which are a key to the deeper understanding of the mechanism of high-temperature superconductivity.
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