Wang Chao, Zhou Zhenjia, Gao Libo
National Laboratory of Solid State Microstructures, Jiangsu Key Laboratory for Nanotechnology, School of Physics Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, China.
Precis Chem. 2024 Mar 12;2(7):273-281. doi: 10.1021/prechem.3c00126. eCollection 2024 Jul 22.
The past few years have witnessed prominent progress in two-dimensional (2D) van der Waals heterostructures. Vertically assembled in an artificial manner, these atomically thin layers possess distinctive electronic, magnetic, and other properties, which have provided a versatile platform for both fundamental exploration and practical applications in condensed matter physics and materials science. Within various potential combinations, a particular set of van der Waals superconductor (SC) heterostructures, which is realized by stacking fabrication based on two-dimensional SCs, is currently attracting intense attention. For example, the Josephson junction, a specific structure in which a nonsuperconducting barrier is inserted between two proximity-coupled SCs, shows phenomena and outstanding properties with atomic-scale thickness. In this Perspective, we first review this emerging research area of van der Waals SC heterostructures, especially progress on the 2D van der Waals Josephson junctions, from the aspects of preparation, performance, and application, and also propose our vision for the future direction and potential innovation opportunities.
在过去的几年里，二维（2D）范德华异质结构取得了显著进展。这些原子级薄的层以人工方式垂直组装，具有独特的电学、磁学和其他特性，为凝聚态物理和材料科学的基础探索及实际应用提供了一个多功能平台。在各种潜在组合中，一组特定的范德华超导体（SC）异质结构，即通过基于二维超导体的堆叠制造实现的结构，目前正吸引着广泛关注。例如，约瑟夫森结是一种在两个邻近耦合的超导体之间插入非超导势垒的特定结构，它在原子尺度厚度下展现出各种现象和优异性能。在这篇展望文章中，我们首先从制备、性能和应用等方面综述范德华超导体异质结构这一新兴研究领域，特别是二维范德华约瑟夫森结的研究进展，并对未来方向和潜在的创新机会提出我们的展望。
