| Budget Amount *help |
¥16,250,000 (Direct Cost: ¥12,500,000、Indirect Cost: ¥3,750,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2019: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2018: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
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| Outline of Final Research Achievements |
We conducted a precise electronic study of non-equilibrium phenomena occurring in solid materials and their surfaces using two time-resolved ARPES (Angle-Resolved Photoemission Spectroscopy) instruments. Specifically, we pursued the following themes:
1: Utilizing the principle that ARPES can directly observe the band dispersion of non-occupied states, we advanced the classification of topological phases in materials. 2: Taking advantage of the ability to observe optical phenomena on the scale of a few nanometers at the solid surface, we investigated novel functionalities based on optical photocurrents, inversion layer distributions, and excitation persistence approaching nanoseconds in topological insulator surfaces. This research contributes to the development of THz-range optical functionalization and optoelectronics.3: In pursuit of understanding non-equilibrium dynamics and establishing governing principles, we performed high-precision measurements of carrier dynamics.
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