パイドナーBETSベースの二機能超伝導体で,ポリメリックディシアナミドマンガネート ((II) アニオン層:カッパ- ((BETS) 2Mn[N(CN) 32]3
Nataliya D Kushch1, Eduard B Yagubskii, Mark V Kartsovnik
1Institute of Problems of Chemical Physics, Russian Academy of Science, Chernogolovka, 142432 Russia. kushch@icp.ac.ru
Journal of the American Chemical Society
|May 17, 2008
まとめ
研究者らは,新しい超伝導結晶,kappa-(BETS) 2Mn[N(CN) 2 3を合成し,導電性および磁気性の両方を示した. これらの材料は,適度な圧力下では約5Kで超伝導性を示し,先進的な材料の研究の道を開きます.
科学分野:
- マテリアルサイエンス 材料科学
- 凝縮物質物理学 凝縮物質物理学
- 固体化学 固体化学
背景:
- 電子と磁気機能を組み合わせた分子材料の探査は,新しい電子機器の開発に不可欠です.
- ビス・エチレン・ネディトー・テトラセレナ・フル・ヴァレン (BETS) 基のラジカル・カチオン塩は,超伝導性を含む豊富な電子特性で知られている.
- これらのシステムに磁性アニオンを組み込むことは,複雑な相図とエキゾチックな量子現象につながる可能性があります.
研究 の 目的:
- 磁性ディシアナミドマンガネート (Dcyanamidomanganate) ((II) アニオンを組み込んだ新しいBETS根幹カチオン塩を合成し,特徴づけること.
- 結果となる材料における電気伝導性,磁気配列,超伝導性の相互作用を調査する.
- 超伝導的移行温度 (Tc) とそれが起こる条件を決定する.
主な方法:
- カッパ-BETS) 2Mn[N(CN) 2) の単一結晶合成3.3.
- 温度と圧力の関数としての電気抵抗性の測定.
- マグネティック・オーダーリングを検出するための磁気感受性測定.
主要な成果:
- カッパ-(BETS) 2Mn[N(CN) 2) の単結晶の合成に成功した3.
- 周りの圧力での結合導電と磁気特性の観察.
- 0.3 kbar.の適度な圧力で,約5Kの移行温度 (Tc) の超伝導性の誘導.
結論:
- 合成された材料,kappa-(BETS) 2Mn[N(CN) 2 3は,共存する電子および磁気特性を有する新しい分子超伝導体を表しています.
- この発見は,磁性アニオンを持つBETSのラジカルカチオン塩が,調節可能な超伝導性および磁性行動を持つ材料を作成する可能性を実証しています.
- この研究は,低次元有機導体における超伝導性と磁性の微妙なバランスの理解に貢献します.
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