Proximity-induced superconductivity in type-II Weyl semimetal NbIrTe4

doi:10.1063/5.0169638

	Proximity-induced superconductivity in type-II Weyl semimetal NbIrTe4
	Li, Dingding 1; Zhang, Ping 1,2; Du, Hongmei 1; Wei, Zihan 1,2; Tian, Wanghao 1; Chen, Shixian 1; Xu, Zuyu 1; Li, Jun3,4 ; Lyu, Yang-Yang 1; Sun, Hancong 2; Sun, Guozhu 1,2; Chen, Jian 1,2; Jin, Biaobing 1,2; Wang, Huabing 1,2; Wu, Peiheng 1,2
	2023-10-16
发表期刊	APPLIED PHYSICS LETTERS
ISSN	0003-6951
卷号	123 期号:16
DOI	10.1063/5.0169638
摘要	Heterostructures between conventional superconductors and materials with different electronic ground states have emerged as a powerful method for exploring the exotic superconducting properties induced by the proximity effect. Here, we investigate Andreev transport through the interface between an s-wave superconductor Nb and a type-II Wely semimetal NbIrTe4. The differential conductance measurement reveals an anomalous zero-bias conductance peak and prominent subgap structures at low temperatures. Furthermore, we found that these subgap structures are not only related to the interface coupling strength but also influenced by the thickness of the NbIrTe4 flake. For thin devices (≤100 nm), the differential conductance spectra only exhibit a single-gap structure. While in thicker devices (∼150 nm), we observed the distinct double-gap structure, which is likely to originate from the proximity-induced superconductivity gap on the bulk and surface of the NbIrTe4 flakes. These results can provide a good reference for understanding the superconducting phase in type-II Weyl semimetals and take a step toward its future application in the field of superconducting electronics. © 2023 Author(s).
关键词	Ground state Selenium compounds Superconducting materials Tellurium compounds Conventional materials Conventional superconductors Electronic ground state Gap structures Proximity effects Proximity-induced superconductivity S-waves Superconducting properties Type II Wave superconductors
URL	查看原文
收录类别	EI
语种	英语
出版者	American Institute of Physics Inc.
EI入藏号	20234415002465
EI主题词	Shear waves
EI分类号	708.3 Superconducting Materials ; 931.1 Mechanics
原始文献类型	Journal article (JA)
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/346409
专题	物质科学与技术学院物质科学与技术学院_PI研究组_李军组
通讯作者	Wang, Huabing
作者单位	1.Research Institute of Superconductor Electronics, Nanjing University, Nanjing; 210023, China; 2.Purple Mountain Laboratories, Nanjing; 211111, China; 3.School of Physical Science and Technology, ShanghaiTech University, Shanghai; 201210, China; 4.ShanghaiTech Laboratory for Topological Physics, ShanghaiTech University, Shanghai; 201210, China
推荐引用方式 GB/T 7714	Li, Dingding,Zhang, Ping,Du, Hongmei,et al. Proximity-induced superconductivity in type-II Weyl semimetal NbIrTe4[J]. APPLIED PHYSICS LETTERS,2023,123(16).
APA	Li, Dingding.,Zhang, Ping.,Du, Hongmei.,Wei, Zihan.,Tian, Wanghao.,...&Wu, Peiheng.(2023).Proximity-induced superconductivity in type-II Weyl semimetal NbIrTe4.APPLIED PHYSICS LETTERS,123(16).
MLA	Li, Dingding,et al."Proximity-induced superconductivity in type-II Weyl semimetal NbIrTe4".APPLIED PHYSICS LETTERS 123.16(2023).