2012 Fiscal Year Final Research Report
Development of Spin Noise Measurement System through a Kerr RotationFluctuation and Application to Semiconductor Nano-Structure.
| Project/Area Number |
22310061
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Nanostructural science
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| Research Institution | Chiba University |
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Principal Investigator |
MURO Kiyofumi 千葉大学, 大学院・理学研究科, 教授 (90112028)
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| Co-Investigator(Renkei-kenkyūsha) |
KOHORI You 千葉大学, 大学院・理学研究科, 教授 (10153660)
OTO Kenichi 千葉大学, 大学院・理学研究科, 教授 (30263198)
MINO Hirofumi 千葉大学, 普遍教育センター, 准教授 (40323430)
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| Project Period (FY) |
2010 – 2012
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| Keywords | ナノプローブ / 光物性 / 半導体物性 / スピンエレクトロニクス |
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| Research Abstract |
We developed a spin noise spectroscopy system, which measures the fluctuation spectra of Faraday (Kerr) rotation by a spectrum analyzer, and the nuclear magnetic resonance of Cs atoms was observed by using a tunable diode laser with a narrow line width at 852nm. The sensitivity was improved by replacing the spectrum analyzer with a real-time FFT system, realized by a combination of FPGA and 14bit-800MHz digitizer. We challenged single spin detection in an InAs quantum dot in a microscopic spot at low temperature, but the signal was below the observation limit.
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