2013 Fiscal Year Final Research Report
Fabrication of thin-film-type terahertz-wave oscillators using intrinsic Josephson junctions
| Project/Area Number |
23560381
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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 |
Electronic materials/Electric materials
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| Research Institution | 防衛大学校(総合教育学群、人文社会科学群、応用科学群、電気情報学群及びシステム工学群) |
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Principal Investigator |
TACHIKI Takashi 防衛大学校(総合教育学群、人文社会科学群、応用科学群、電気情報学群及びシステム工, 電気情報学群, 准教授 (60531796)
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| Co-Investigator(Kenkyū-buntansha) |
UCHIDA Takashi 防衛大学校, 電気情報学群, 教授 (50531802)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 酸化物高温超伝導体 / ジョセフソン接合 / テラヘルツ波 |
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| Research Abstract |
To realize thin-film-type terahertz (THz)-wave oscillators using high-temperature superconducting Bi-2212 intrinsic Josephson junctions, key technologies were developed as follows: Cerium dioxide buffer layers with a smooth surface were deposited to increase grain sizes in Bi-2212 thin films fabricated by metal-organic decomposition. A junction impedance for designing antenna-coupled oscillators was calculated from an analytical solution of the coupled sine-Gordon equation. Moreover, resonant modes in a Bi-2212 mesa were estimated from bias dependencies of the radiation power and frequency measured using a THz Fourier-transform spectrometer. These results are useful for fabricating the thin-film THz-wave oscillators for high power generation.
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