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arXiv 0909.1195cond-mat.supr-con
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基于第一性原理的铁基超导体$\pm s$波模型:specific heat和核磁弛豫率的研究

First-principles-based $\pm s$-wave modelling for iron-based superconductors:Studies for specific heat and nuclear magnetic relaxation rate

N. Nakai, H. Nakamura, Y. Ota, Y. Nagai, N. Hayashi, M. Machida

摘要:

为了统一解释不同探针在典型铁基超导体中观测到的超导态实验结果,将准经典理论与第一性原理计算相结合,构造了一个真实的多带$\pm s$ -波对模型.该模型成功地解决了争议的事实,如两个波段$\pm s$ -波一个简化的模型失败。模型中的一个关键是存在相对较小的间隙,导致材料依赖的特性。

英文摘要:

In order to consistently explain controversial experimental results on superconducting states observed by different probes in typical iron-based superconductors, we construct a realistic multi-band $\pm s$-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 $\pm s$-wave one fail to do. A key in the model is the existence of relatively small gaps which leads to material-dependent peculiarities.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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