The Superconducting Mechanism in BiS₂-Based Superconductors: A Comprehensive Review with Focus on Point-Contact Spectroscopy.

IF 4.4 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Nanomaterials Pub Date : 2024-10-30 DOI:10.3390/nano14211740

Paola Romano, Aniello Pelella, Antonio Di Bartolomeo, Filippo Giubileo

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Abstract

The family of BiS₂-based superconductors has attracted considerable attention since their discovery in 2012 due to the unique structural and electronic properties of these materials. Several experimental and theoretical studies have been performed to explore the basic properties and the underlying mechanism for superconductivity. In this review, we discuss the current understanding of pairing symmetry in BiS₂-based superconductors and particularly the role of point-contact spectroscopy in unravelling the mechanism underlying the superconducting state. We also review experimental results obtained with different techniques including angle-resolved photoemission spectroscopy, scanning tunnelling spectroscopy, specific heat measurements, and nuclear magnetic resonance spectroscopy. The integration of experimental results and theoretical predictions sheds light on the complex interplay between electronic correlations, spin fluctuations, and Fermi surface topology in determining the coupling mechanism. Finally, we highlight recent advances and future directions in the field of BiS₂-based superconductors, underlining the potential technological applications.

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基于 BiS2 的超导体的超导机制：以点接触光谱学为重点的全面回顾。

基于 BiS2 的超导体家族自 2012 年被发现以来，因其独特的结构和电子特性而备受关注。为了探索超导的基本特性和内在机制，人们进行了多项实验和理论研究。在这篇综述中，我们将讨论目前对基于 BiS2 的超导体中配对对称性的理解，特别是点接触光谱学在揭示超导态基本机制中的作用。我们还回顾了利用不同技术获得的实验结果，包括角度分辨光发射光谱学、扫描隧穿光谱学、比热测量和核磁共振光谱学。实验结果与理论预测的结合揭示了电子关联、自旋波动和费米面拓扑之间在决定耦合机制方面的复杂相互作用。最后，我们重点介绍了基于 BiS2 的超导体领域的最新进展和未来方向，并强调了其潜在的技术应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nanomaterials NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

8.50

自引率

9.40%

发文量

3841

审稿时长

14.22 days

期刊介绍： Nanomaterials (ISSN 2076-4991) is an international and interdisciplinary scholarly open access journal. It publishes reviews, regular research papers, communications, and short notes that are relevant to any field of study that involves nanomaterials, with respect to their science and application. Thus, theoretical and experimental articles will be accepted, along with articles that deal with the synthesis and use of nanomaterials. Articles that synthesize information from multiple fields, and which place discoveries within a broader context, will be preferred. There is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental or methodical details, or both, must be provided for research articles. Computed data or files regarding the full details of the experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. Nanomaterials is dedicated to a high scientific standard. All manuscripts undergo a rigorous reviewing process and decisions are based on the recommendations of independent reviewers.