THz emission from intrinsic Josephson junctions under the layer parallel magnetic field
| Project/Area Number |
24510181
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Microdevices/Nanodevices
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| Research Institution | National Institute for Materials Science |
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Principal Investigator |
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)
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| Co-Investigator(Kenkyū-buntansha) |
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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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 固有ジョセフソン接合 / 空洞共振 / テラヘルツ / 交流ジョセフソン効果 / ビスマス系高温超伝導体 / テラヘルツ発振 / ジョセフソン磁束フロー / 固有ジョセフソン効果 / ジョセフソン磁束格子フロー |
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| Outline of Final Research Achievements |
High-Tc superconducting oxides have layered Perovskite crystal structures. Among these, in highly anisotropic Bi2Sr2CaCu2O8+, “superconducting” CuO2 double layers are interleaved with “insulating” SrO-BiO-BiO-SrO layers. Such an alternating layered structure was found to exhibit a “Josephson effect”. Namely, a device structure is naturally embedded in the crystals. The number of Josephson junctions in a crystal having a thickness of 1 μm is as much as 650, which can never be realized by a thin film fabrication technique.
Furthermore, the energy gap of a high-Tc superconductor is one order larger than that of a conventional metal superconductor (Nb), which results in the generation of a one order higher frequency microwave becoming possible, i. e. from 1 THz to 10 THz from the enormous number of junctions in the array. Thus, one can expect a powerful THz generation from a Bi2Sr2CaCu2O8+d single crystal.
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Report
(4 results)
Research Products
(20 results)
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[Journal Article] Direct observation of the depairing current density in single-crystalline Ba0.5K0.5Fe2As2 microbridge with nanoscale thickness2013
Author(s)
Jun Li, Jie Yuan, Ya-Hua Yuan, Jun-Yi Ge, Meng-Yue Li, Hai-Luke Feng, Paulo J. Pereira, Akira Ishii, Takeshi Hatano, Alejandro V. Silhanek, Liviu F. Chibotaru, Johan Vanacken, Kazunari Yamaura, Yamaua-Bing Wang, Eiji Takayama-Muromachi, and Victor V. Moshchalkov
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Journal Title
Applied Physics Letters
Volume: 103
DOI
Related Report
Peer Reviewed
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[Journal Article] Linewidth dependence of coherent terahertz emission from Bi2Sr2CaCu2O8 intrinsic Josephsonjunction stacks in the hot-spot regime2012
Author(s)
Mengyue Li, Jie Yuan, Nickolay Kinev, Jun Li, Boris Gross, Stefan Guenon, A. Ishii, K. Hirata, Takeshi Hatano, D. Koelle, R. Kleiner, V. P. Koshelets, H. B. Wang, and P. H. Wu
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Journal Title
PHYSICAL REVIEW B
Volume: 86
DOI
Related Report
Peer Reviewed
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[Journal Article] Hot-spot formation in stacks of intrinsic Josephson junctions in Bi2Sr2CaCu2O82012
Author(s)
B. Gross, S. Guenon, J. Yuan, M. Y. Li, J. Li, A. Ishii, R. G. Mints, T. Hatano, P. H. Wu, D. Koelle, H. B. Wang, and R. Kleiner
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Journal Title
PHYSICAL REVIEW B
Volume: 86
Pages: 94524-94524
DOI
Related Report
Peer Reviewed
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[Journal Article] Terahertz emission from Bi2Sr2CaCu2O8+delta intrinsic Josephson junction stacks with all-superconducting electrodes2012
Author(s)
J Yuan, M Y Li, J Li, B Gross, A Ishii, K Yamaura, T Hatano, K Hirata, E Takayama-Muromachi, P H Wu, D Koelle, R Kleiner, and H B Wang
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Journal Title
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
Volume: 25
Pages: 75015-75015
DOI
Related Report
Peer Reviewed
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