THz Wave Generation by Means of Superconducting Intrinsic Josephson Junctions and Its Application
| Project/Area Number |
18204031
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Condensed matter physics II
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| Research Institution | University of Tsukuba |
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Principal Investigator |
KADOWAKI Kazuo University of Tsukuba, 大学院・数理物質科学研究科, 教授 (00272170)
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| Co-Investigator(Kenkyū-buntansha) |
KAKEYA Itsuhiro 筑波大学, 大学院・数理物質科学研究科, 講師 (80302389)
KOKUBO Nobuhito 筑波大学, 大学院・数理物質科学研究科, 講師 (80372340)
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| Project Period (FY) |
2006 – 2008
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| Project Status |
Completed (Fiscal Year 2008)
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| Budget Amount *help |
¥49,920,000 (Direct Cost: ¥38,400,000、Indirect Cost: ¥11,520,000)
Fiscal Year 2008: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2007: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
Fiscal Year 2006: ¥37,310,000 (Direct Cost: ¥28,700,000、Indirect Cost: ¥8,610,000)
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| Keywords | 高温超伝導 / 固有ジョセフソン接合 / テラヘルツ波 / 交流ジョセフソン効果 / ジョセフソンレーザー / 非線形発振 / 超伝導THz波発振 / THz波の発振 / 交流ジョセフソンレーザー / 国際情報交換 / Fiske共鳴 / 超伝道THz発振 / I-V特性 / ジョセフソン効果 |
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| Research Abstract |
高温超伝導体は超伝導を担う平面的に配列したCuO_2層が積層した結晶構造を持ち、面間は超伝導の結合が弱く、原子レベルで高密度に積層した多重ジョセフソン接合系を形成している。高品質単結晶Bi_2Sr_2CaCu_2O^(8+δ)を育成し、CuO_2面に垂直に直流電流を流すことにより、強力で連続かつコヒーレントなテラヘルツ帯の電磁波を発生することに成功した。これはレーザー発振と同等であり、今後、基礎研究はもとより医療診断、セキュリティなど幅広い応用が期待される。
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Report
(4 results)
Research Products
(97 results)
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[Journal Article] Direct Observation of Terahertz Electromagnetic Waves Emitted from Intrinsic Josephson Junctions in Single Crystalline Bi_2Sr_2CaCu_2O_82008
Author(s)
K. Kadowaki, H. Yamaguchi, K. Kawamata, T. Yamamoto, H. Minami, I. Kakeya, U. Welp, L. Ozyuzer, A. E. Koshelev, C. Kurter, K. E. Gray and W. -K. Kwok
Pages
634-639
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[Journal Article] Direct Observation of Terahertz Electromagnetic Waves Emitted from Intrinsic Josephson Junctions in Single Crystalline Bi2Sr2CaCu2O8+52008
Author(s)
K. Kadowaki, H. Yamaguchi, K. Kawama t a, T. Yamamoto, H.Minami, I. Kakeya, U. Welp,L. Ozyuzer, A. E. Koshelev,C. Kur ter, K. E. Gray and W. - K. Kwok
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Journal Title
Physica C 468
Pages: 669-673
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Peer Reviewed
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[Journal Article] Emission of Coherent THz Radiation from Superconductors2007
Author(s)
L. Ozyuzer, A. E. Koshelev, C. Kurter, N. Gopalsami, Q. Li, M. Tachiki, K. Kadowaki, T. Yamamoto, H. Minami, H. Yamaguchi, T. Tachiki, K. E. Gray, W. -K. Kwok and U. Welp
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Journal Title
Science 318 318
Pages: 1291-1293
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[Journal Article] Shadow Bands in Single-Layered Bi_2Sr_2CuO_<6+δ> Studied by Angle-Resolved Photoemission Spectroscopy2006
Author(s)
K. Nakayama, T. Sato, T. Dobashi, K. Terashima, S. Souma, H. Matsui, T. Takahashi, J.C.Campuzano, K. Kudo, T. Sasaki, N. Kobayashi, T. Takeuchi, K. Kadowaki, M. Kofu and K. Hirota
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[Journal Article] Evolution of The Pseudogap from Fermi Arcs to The Nodal Liquid2006
Author(s)
A. Kangel, M.R.Norman, M. Randeria, U. Chatterjee, S. Souma, A. Kaminski, H.M.Fretwell, S. Rosenkranz, M. Shi, T. Sato, T. Takahashi, Z.Z.Li, H.Raffy, K. Kadowaki, D. Hinks, L. Ozyuzer and J.C.Campuzano
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Journal Title
Nature Physics 2
Pages: 447-451
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[Journal Article] Structure Phase Transition in FeSr_2 YCu_2O_<6+δ>2006
Author(s)
T. Mochiku, Y. Hata, K. Iwase, M. Yonemura, S. Harjo, A. Hoshikawa, K. Oikawa, T. Ishigaki, T. Kamiyama, H. Fujii, F. Izumi, K. Kadowaki and K. Hirata
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Journal Title
Physica B 385
Pages: 561-563
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[Presentation] Temperature and Field Dependence of the Emission of Terahertz Waves from Intrinsic Josephson Junctions2009
Author(s)
Ulrich Welp, Alexei Koshelev, Lutfi Ozyuzer, Cihan Kurter, Masashi Tachiki, Kazuo Kadowaki, Takashi Yamamoto and Wai -K. Kwok
Organizer
APS(American Physical Society) March Meeting(given by oral presentation, Session D34-1, Program & Show Guide, p183)
Place of Presentation
held at Pittsburgh, USA
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