| Budget Amount *help |
¥185,640,000 (Direct Cost: ¥142,800,000、Indirect Cost: ¥42,840,000)
Fiscal Year 2020: ¥22,360,000 (Direct Cost: ¥17,200,000、Indirect Cost: ¥5,160,000)
Fiscal Year 2019: ¥29,120,000 (Direct Cost: ¥22,400,000、Indirect Cost: ¥6,720,000)
Fiscal Year 2018: ¥35,490,000 (Direct Cost: ¥27,300,000、Indirect Cost: ¥8,190,000)
Fiscal Year 2017: ¥36,920,000 (Direct Cost: ¥28,400,000、Indirect Cost: ¥8,520,000)
Fiscal Year 2016: ¥61,750,000 (Direct Cost: ¥47,500,000、Indirect Cost: ¥14,250,000)
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| Outline of Final Research Achievements |
We were studying the physics of valley-spin degree of freedom via characteristics quantum optical phenomena in the new platform of atomically thin materials with valley-spin locking systems, and extending these findings to realize the control of valley-spin polarization in this project. The mechanism of relaxation process of exciton valley-spin polarization has been revealed, which is the essential issues in the valley-spin physics. We also realized the continuous external control of valley-spin polarization by applying the bias gate voltage mediated by screening of Coulomb interaction. Moreover, the extremely low threshold light amplification due to the strong light confinement and high luminescence efficiency has been demonstrated in the micro-cavity device structures. Then, we have succeeded to open the new research area of “valley-spin photonics in the atomically thin materials”, which will be contributed to the development of optical and material science research fields.
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