电荷密度波与超导性:一些结果和未来展望

IF 1.9 Q3 PHYSICS, CONDENSED MATTER
G. Venditti, S. Caprara
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引用次数: 2

摘要

越来越多的实验证据表明,在不同的(准)二维物理系统中存在丝状超导性。在这项工作中,我们讨论了在某些情况下,这种情况可能与以电荷密度波形式的电荷有序为特征的相位的竞争有关的建议。我们在两类典型的材料中提供了支持我们论点的实验证据的简要摘要,即过渡金属二硫属元素化物和铜超导体。我们提出了一个简单的Ginzburg–Landau二阶参数模型作为研究这种竞争的起点。最后,我们讨论了一个更复杂的模型的结果,该模型已经在文献中提出,并对杂质的存在进行了编码,以及如何进一步改进该模型,以真正解决电荷密度波和超导性之间的相互作用,以及在不同电荷有序区域之间的畴壁上可能出现的丝状超导性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Charge-Density Waves vs. Superconductivity: Some Results and Future Perspectives
Increasing experimental evidence suggests the occurrence of filamentary superconductivity in different (quasi) two-dimensional physical systems. In this piece of work, we discuss the proposal that under certain circumstances, this occurrence may be related to the competition with a phase characterized by charge ordering in the form of charge-density waves. We provide a brief summary of experimental evidence supporting our argument in two paradigmatic classes of materials, namely transition metal dichalcogenides and cuprates superconductors. We present a simple Ginzburg–Landau two-order-parameters model as a starting point to address the study of such competition. We finally discuss the outcomes of a more sophisticated model, already presented in the literature and encoding the presence of impurities, and how it can be further improved in order to really address the interplay between charge-density waves and superconductivity and the possible occurrence of filamentary superconductivity at the domain walls between different charge-ordered regions.
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来源期刊
Condensed Matter
Condensed Matter PHYSICS, CONDENSED MATTER-
CiteScore
2.90
自引率
11.80%
发文量
58
审稿时长
10 weeks
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