| Budget Amount *help |
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Outline of Final Research Achievements |
The elemental process of the electron-lattice interaction is the electron transition as a result of the electron-phonon scattering. In this study, the process of the electron scattering by the phonon from the K-point to the neighborhood of the Gamma-point in the Brillouin zone of the graphite and single-layered graphene is, for the first time, observed by using the angle-resolved photoelectron spectroscopy in a way of resolving momentum and energy. Our finding is important because this reveals quantitatively the matrix element of the electron-phonon scattering which rules the electron-lattice interaction. Moreover, since the optical transition plays critical role in the whole process, we theoretically investigate the photoelectron excitation process in graphite and graphene.
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