Study of dynamic spin systems using the terahertz-pump optical-probe spectroscopy
| Project/Area Number |
15K13659
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Inorganic chemistry
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| Research Institution | Kobe University |
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Principal Investigator |
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| Research Collaborator |
MORIYASU Takeshi 神戸大学, 理学研究科, 学術研究員
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Keywords | 励起状態 / テラヘルツ |
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| Outline of Final Research Achievements |
We developed an optical-pump terahertz-probe spectroscopy system and a terahertz-pump optical-probe spectroscopy system using a terahertz pulse source and a nanosecond UV laser to study the excited spin dynamics under light irradiation. The propagation of the terahertz pulse was observed in photo-excited silicon. It was found that the observed peak-shift behavior of the transmitted terahertz pulse in high-density photo-excitation cannot be explained by the Drude model, and that the Drude-Smith model, in which carrier scattering is included, can explain the behavior qualitatively in both the low and high-density photo-excitation.
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Report
(3 results)
Research Products
(6 results)
