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Effect of Bias Electrode Position on Terahertz Radiation from Pentagonal Mesas of Superconducting Bi2Sr2CaCu2O8+δ
http://hdl.handle.net/2241/00124811
http://hdl.handle.net/2241/0012481119ea1c4a-c33e-4d5c-84db-754ab8239cc4
名前 / ファイル | ライセンス | アクション |
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IEEETST_5-3 (632.3 kB)
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Item type | Journal Article(1) | |||||
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公開日 | 2015-06-18 | |||||
タイトル | ||||||
タイトル | Effect of Bias Electrode Position on Terahertz Radiation from Pentagonal Mesas of Superconducting Bi2Sr2CaCu2O8+δ | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Delfanazari, K.
× Delfanazari, K.× Asai, H.× Tsujimoto, M.× Kashiwagi, T.× Kitamura, T.× Yamamoto, T.× Wilson, W.× Klemm, R.A.× Hattori, T.× Kadowaki, K. |
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著者別名 |
柏木, 隆成
× 柏木, 隆成× 服部, 利明× 門脇, 和男 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We examined the effect of the bias current position on the radiation of intense and coherent terahertz electromagnetic waves from the intrinsic Josephson junctions (IJJs) in regular pentagonal mesas of single crystalline high-Tc superconducting Bi2Sr2CaCu2O8+δ. The emission from Sample 1, a mesa with a current bias feed on its middle, is strong and sharply peaked at 0.47 THz, whereas that from Sample 2, a mesa with its feed along an edge, shows a comparably strong, sharp peak at 0.43 THz. The common backbending in the current-voltage characteristics due to Joule heating was seen for Sample 1 but almost not for Sample 2. The experimental results are in good agreement with numerical simulations and calculations, both for the cavity resonances and the angular emission patterns. The resonance peaks obtained from these pentagonal mesas are both stronger and narrower than those found previously from differently shaped mesas fabricated by focused ion beam milling. The overall devices are small enough to be cooled to their operational temperatures by Stirling refrigerators, so that properly designed devices could be held in one hand as for laser pointers. Therefore, our IJJ-based emitter devices are promising candidates to fill the THz gap with compact, continuous-wave quantum solid-state sources. | |||||
書誌情報 |
IEEE transactions on terahertz science and technology 巻 5, 号 3, p. 505-511, 発行日 2015-05 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2156-342X | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA12541535 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1109/TTHZ.2015.2409552 | |||||
権利 | ||||||
権利情報 | © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. | |||||
著者版フラグ | ||||||
値 | author | |||||
出版者 | ||||||
出版者 | Institute of Electrical and Electronics Engineers |