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KAKEN_25810142seika.pdf
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Download
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:715.5 KB
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Total downloads since Jul 31, 2019 : 317
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異種界面形成に基づいた協奏的な電子物性の開拓
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イシュ カイメン ケイセイ ニ モトズイタ キョウソウテキナ デンシ ブッセイ ノ カイタク
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Ishu kaimen keisei ni motozuita kyosotekina denshi bussei no kaitaku
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Synergetic electronic property based on the formation of hetero-interface
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山本, 崇史
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ヤマモト, タカシ
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Yamamoto, Takashi
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慶應義塾大学・理工学部・専任講師
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Research team head
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科研費研究者番号 : 40532908
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2016
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科学研究費補助金研究成果報告書
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2015
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本研究課題では, 光化学反応を利用することによって超伝導特性を可逆に制御できるような材料を創出することを目的とした。ホウ素ドープダイヤモンド(BDD)表面の終端原子を変換することによって, 臨界電流密度の可逆な制御を達成し, これは超伝導体積分率の変化に対応していることが磁化測定から明らかとなった。つまり, BDDの超伝導特性が表面に極めて敏感であることがわかった。BDD表面にアゾベンゼン化合物を導入したAZ-BDDを作製したところ, 光化学反応に伴った臨界電流密度の増幅率は55%であり, この値は先行研究の4倍に達した。これは, BDDが表面に敏感な超伝導特性を示すことに起因していると考えられる。
In the current research project, I have developed the photofunctional material, where superconducting properties could be modulated upon photochemical reaction. First, I have examined the superconducting properties of a boron-doped diamond (BDD). As surface termination of BDD can be easily modified by chemical reactions, I have especially examined the superconducting properties of hydrogen- and oxygen-terminated BDD (denoted as H- and O-BDD). Critical current density was reversibly modulated between H- and O-BDD, derived from changes in the superconducting volume fraction. Next. I have fabricated a hybrid superconductor composed of BDD and a photochromic azobenzene compound (denoted as AZ-BDD). In AZ-BDD, critical current density was reversibly modulated upon photoisomerization of AZ. The photochromism-induced amplification of critical current density was about 55 % that was 4 times larger than the previous report.
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研究種目 : 若手研究(B)
研究期間 : 2013～2015
課題番号 : 25810142
研究分野 : 光機能性材料
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| Jul 31, 2019 | | 著者,抄録 内容,資源タイプ を変更 |
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