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CONVENTIONAL' SUPERCONDUCTIVITY: A CRITICAL ASSESSMENT

机译：常规的超导性：关键评估

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摘要

The success of the BCS theory of superconductivity [1], supplemented with electron phonon dynamics [2] to explain detailed experimental data, has been well documented over the last several decades [3-5], including a recent review co-authored by the present author [6], and a companion article in this issue [7]. There are two levels of understanding; the first is associated with the so-called "pairing formalism" [81,which has innumerable successes documented in the cited reviews and elsewhere, not least of which is the presence of "Case II coherence factors" [9], spectacularly confirmed in early NMR and electromagnetic absorption experiments. The second level is with respect to mechanism; the overwhelmingly prevailing view is that the electron-phonon interaction is responsible for superconductivity in conventional superconductors. For example, the sophisticated explanation and understanding of tunneling data in Pb is held aloft as the quintessential experiment to 'prove' electron-phonon mediated superconductivity [10]. The purpose of this article is to raise some possible difficulties with our understanding of mechanism, notwithstanding the decades of supportive research just referred to.
机译：BCS超导理论[1]的成功，加上电子声子动力学[2]来解释详细的实验数据，在过去的几十年中[3-5]得到了充分的文献证明，其中包括最近由美国原子能机构合着的一篇综述。目前的作者[6]，以及本期的配套文章[7]。有两个层次的理解;第一个与所谓的“配对形式主义” [81]有关，在引用的评论和其他地方有无数的成功记载，其中不乏“案例II相干因子” [9]的存在，该现象在早期得到了惊人的证实。 NMR和电磁吸收实验。第二级是关于机制的。绝大多数观点认为，电子-声子相互作用是常规超导体中超导性的原因。例如，作为“证明”电子声子介导的超导性的典型实验，对铅中的隧穿数据进行了详尽的解释和理解[10]。尽管刚刚提到了数十年的支持性研究，但本文的目的是在我们对机制的理解上提出一些可能的困难。

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