| Project/Area Number |
21360015
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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 |
Applied materials science/Crystal engineering
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
WANG Huabing 独立行政法人物質・材料研究機構, 超伝導物性ユニット, 主幹研究員 (70421427)
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| Co-Investigator(Renkei-kenkyūsha) |
HATANO Takeshi 独立行政法人物質・材料研究機構, 超伝導物性ユニット, グループリーダー (50354337)
YUAN Jie 独立行政法人物質・材料研究機構, 超伝導物性ユニット, NIMS特別研究員 (70469790)
ARISAWA Shunichi 独立行政法人物質・材料研究機構, 超伝導物性ユニット, 主幹研究員 (00354340)
ISHII Akira 独立行政法人物質・材料研究機構, 超伝導物性ユニット, 主任研究員 (70354339)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥18,980,000 (Direct Cost: ¥14,600,000、Indirect Cost: ¥4,380,000)
Fiscal Year 2011: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2010: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2009: ¥14,300,000 (Direct Cost: ¥11,000,000、Indirect Cost: ¥3,300,000)
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| Keywords | テラヘルツ / ジョセフソン接合アレー / レーザー / ジョセブソン接合アレー |
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| Research Abstract |
In intrinsic Josephson junctions of high-Tc Bi2Sr2CaCu2O8 single crystals, we have successfully observed THz emission with tunable frequencies from 350 GHz to 750 GHz. The highest frequency is up to nearly 1 THz. A hot-spot area, for the first time observed by a low temperature scanning laser microscope, is attributed to the high tunability of the operation frequency and the synchronization of 600 junctions, which results in a very narrow linewidth. We published three papers in Physical Review Letters and Physical Review B, and submitted one to Physical Review Letters and one to Physcial Review B.
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