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First-principles-based s~±-wave modeling for iron-based superconductors: Specific heat and nuclear magnetic relaxation rate

机译:铁基超导体的基于第一原理的s〜±波模型:比热和核磁弛豫率

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摘要

In order to consistently explain controversial experimental results on superconducting states observed by different probes in typical iron-based superconductors, we construct a realistic multiband s~±-wave pairing model by combining the quasiclassical formalism with the first-principles calculation. The model successfully resolves the controversies in contrast to the fact that simplified models such as two-band s~±-wave one fail to do. A key in the model is the existence of relatively small gaps which leads to material-dependent peculiarities.
机译:为了一致地解释在典型的铁基超导体中不同探针观察到的关于超导状态的有争议的实验结果,我们将准经典形式主义与第一性原理计算相结合,构造了一个现实的多频带s〜±波配对模型。与简化模型(例如两波段s〜±wave)无法做到这一点相比,该模型成功解决了争议。该模型的关键是存在相对较小的间隙,这导致了与材料有关的特性。

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  • 来源
    《Physical review》 |2010年第9期|p.094501.1-094501.5|共5页
  • 作者单位

    CCSE, Japan Atomic Energy Agency, 6-9-3 Higashi-Ueno, Taito-ku, Tokyo 110-0015, Japan CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan;

    rnCCSE, Japan Atomic Energy Agency, 6-9-3 Higashi-Ueno, Taito-ku, Tokyo 110-0015, Japan CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan TRIP, JST, 5 Sanban-cho, Chiyoda-ku, Tokyo 110-0075, Japan;

    rnCCSE, Japan Atomic Energy Agency, 6-9-3 Higashi-Ueno, Taito-ku, Tokyo 110-0015, Japan CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan;

    rnCCSE, Japan Atomic Energy Agency, 6-9-3 Higashi-Ueno, Taito-ku, Tokyo 110-0015, Japan CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan TRIP, JST, 5 Sanban-cho, Chiyoda-ku, Tokyo 110-0075, Japan;

    rnCREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan N2RC, Osaka Prefecture University, 1-2 Gakuen-cho, Naka-ku, Sakai 599-8570, Japan;

    CCSE, Japan Atomic Energy Agency, 6-9-3 Higashi-Ueno, Taito-ku, Tokyo 110-0015, Japan CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan TRIP, JST, 5 Sanban-cho, Chiyoda-ku, Tokyo 110-0075, Japan;

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  • 正文语种 eng
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  • 关键词

    theories and models of superconducting state; electronic structure; ternary, quaternary and multinary compounds (including Chevrel phases, borocarbides, etc.);

    机译:超导状态的理论和模型;电子结构三元;四元和多元化合物(包括Chevrel相;硼碳化物等);

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