南方科技大学知识苑(SUSTech KC): Hard Superconducting Gap in PbTe Nanowires

题名	Hard Superconducting Gap in PbTe Nanowires
作者	Gao, Yichun 1; Song, Wenyu 1; Yang, Shuai 1; Yu, Zehao 1; Li, Ruidong 1; Miao, Wentao 1; Wang, Yuhao 1; Chen, Fangting 1; Geng, Zuhan 1; Yang, Lining 1; Xia, Zezhou 1; Feng, Xiao 1,2,3,4; Zang, Yunyi 2,4; Li, Lin 2; Shang, Runan 2,4; Xue, Qi-Kun1,2,3,4,5 ; He, Ke 1,2,3,4; Zhang, Hao 1,2,3
通讯作者	He, Ke; Zhang, Hao
发表日期	2024-03-01
DOI	10.1088/0256-307X/41/3/038502
发表期刊	CHINESE PHYSICS LETTERS 影响因子和分区
ISSN	0256-307X
EISSN	1741-3540
卷号	41 期号:3
摘要	Semiconductor nanowires coupled to a superconductor provide a powerful testbed for quantum device physics such as Majorana zero modes and gate-tunable hybrid qubits. The performance of these quantum devices heavily relies on the quality of the induced superconducting gap. A hard gap, evident as vanishing subgap conductance in tunneling spectroscopy, is both necessary and desired. A hard gap has been achieved and extensively studied before in III-V semiconductor nanowires (InAs and InSb). In this study, we present the observation of a hard superconducting gap in PbTe nanowires coupled to a superconductor Pb. The gap size Delta is similar to 1 meV (maximally 1.3 meV in one device). Additionally, subgap Andreev bound states can also be created and controlled through gate tuning. Tuning a device into the open regime can reveal Andreev enhancement of the subgap conductance. These results pave the way for diverse superconducting quantum devices based on PbTe nanowires.
相关链接	[来源记录]
收录类别	SCI ; EI
语种	英语
学校署名	其他
资助项目	National Natural Science Foundation of China[92065206] ; Innovation Program for Quantum Science and Technology[2021ZD0302400] ; National Postdoctoral Researcher Program of China[GZC20231368]
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:001185396400001
出版者	IOP Publishing Ltd
ESI学科分类	PHYSICS
来源库	Web of Science
引用统计	被引频次[WOS]：3
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/788893
专题	南方科技大学
作者单位	1.Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China 2.Beijing Acad Quantum Informat Sci, Beijing 100193, Peoples R China 3.Frontier Sci Ctr Quantum Informat, Beijing 100084, Peoples R China 4.Hefei Natl Lab, Hefei 230088, Peoples R China 5.Southern Univ Sci & Technol, Shenzhen 518055, Peoples R China
推荐引用方式 GB/T 7714	Gao, Yichun,Song, Wenyu,Yang, Shuai,et al. Hard Superconducting Gap in PbTe Nanowires[J]. CHINESE PHYSICS LETTERS,2024,41(3).
APA	Gao, Yichun.,Song, Wenyu.,Yang, Shuai.,Yu, Zehao.,Li, Ruidong.,...&Zhang, Hao.(2024).Hard Superconducting Gap in PbTe Nanowires.CHINESE PHYSICS LETTERS,41(3).
MLA	Gao, Yichun,et al."Hard Superconducting Gap in PbTe Nanowires".CHINESE PHYSICS LETTERS 41.3(2024).