|Budget Amount *help
¥44,850,000 (Direct Cost: ¥34,500,000、Indirect Cost: ¥10,350,000)
Fiscal Year 2020: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2019: ¥10,790,000 (Direct Cost: ¥8,300,000、Indirect Cost: ¥2,490,000)
Fiscal Year 2018: ¥11,570,000 (Direct Cost: ¥8,900,000、Indirect Cost: ¥2,670,000)
Fiscal Year 2017: ¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000)
|Outline of Final Research Achievements
We have investigated new types of atomic-layer materials based on the understanding of energy band structure in the vicinity of the Fermi level responsible for the physical properties, by integrating high-resolution spin-resolved ARPES technique and fabrication of high-quality ultrathin films using molecular-beam epitaxy. In transition-metal dichalcogenides (TMDs), we fabricated some new monolayer compounds and accurately elucidated their unusual electronic states such as the energy gap. We also proposed a new method to control dimensionality of the TMDs. Moreover, we found Dirac electrons in the iron-based-superconductor thin films and hybrid thin films involving topological insulators and Rasha metals, and found that its appearance is governed by a few key parameters such as the spin-orbit interactions and crystal symmetry.