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arXiv 1505.04367cond-mat.supr-concond-mat.str-el
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Fe取代Bi2212的各向异性散射率

Anisotropic scattering rate in Fe substituted Bi2212

M. Naamneh, Y. Lubashevsky, E. Lahoud, G. D. Gu, A. Kanigel

摘要:

我们用角分辨光电子能谱(ARPES)测量了Fe取代Bi 2212的电子结构。我们发现,替代不改变的超导能隙的动量依赖性,但诱导一个非常各向异性的散射率增强。Fe替代与Zn替代的效果的比较表明Fe如此有效地降低T $_c$是因为它非常强烈地抑制了腹节点周围的相干权重。

英文摘要:

We measured the electronic structure of Fe substituted Bi2212 using Angle Resolved Photoemission Spectroscopy (ARPES). We find that the substitution does not change the momentum dependence of the superconducting gap but induces a very anisotropic enhancement of the scattering rate. A comparison of the effect of Fe substitution to that of Zn substitution suggests that the Fe reduces T$_c$ so effectively because it supresses very strongly the coherence weight around the anti-nodes.

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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