Spectroscopy on superconductor surface modulated by periodic nanostructures
Abstract Superconductors covered with periodic superstructures have attracted enormous research attention recently. However, most studies focus on the superstructures with periodicity longer than the superconductor coherence length. Here, we investigate the vacuum-cleaved 2H-NbSe 2 by scanning tunneling microscopy and spectroscopy. We reveal single-layer-high periodic nanostructures on the 2H-NbSe 2 surface, which arranges in about 15 nm period, i.e. similar to the coherence length of 2H-NbSe 2 . Our position-dependent tunneling spectroscopy uncovers that the superconductivity at zero magnetic field is only marginally affected by the nanostructure, but the vortex shape is drastically altered. Our results establish the foundation for further research on nanostructures on superconductors.
Authors
- Jinfeng Jia
- Yi Yang (ORCID: https://orcid.org/0000-0002-6209-2436)
- Shiyong Wang (ORCID: https://orcid.org/0000-0001-6603-9926)
- Jinghua Sun (ORCID: https://orcid.org/0000-0001-6420-107X)
- Dandan Guan (ORCID: https://orcid.org/0000-0002-3714-8813)
- Xuhui Ning (ORCID: https://orcid.org/0000-0003-0561-3511)
- Qiaoyan Yu (ORCID: https://orcid.org/0000-0002-7232-8529)
- Yaoyi Li (ORCID: https://orcid.org/0000-0002-0054-4054)
- Canhua Liu (ORCID: https://orcid.org/0000-0003-2240-3559)
- Tongqiao Miao (ORCID: https://orcid.org/0000-0002-7521-9002)
- Hao Zheng (ORCID: https://orcid.org/0000-0002-6495-874X)
- Ruijun Xi
- Pengyu Hu (ORCID: https://orcid.org/0000-0003-0251-0453)
- Liang Liu (ORCID: https://orcid.org/0000-0001-8339-468X)
- Xi Chen (ORCID: https://orcid.org/0000-0002-9525-4737)
- Yi Zhang (ORCID: https://orcid.org/0000-0003-1204-8717)
- Xian Du
- Xiaoxue Liu (ORCID: https://orcid.org/0000-0001-8761-4010)
- Yanping Liu (ORCID: https://orcid.org/0000-0001-7224-3894)
- Hao Yang (ORCID: https://orcid.org/0000-0002-1442-2971)
- Weidong Luo (ORCID: https://orcid.org/0000-0003-3829-1547)
- Dang Liu (ORCID: https://orcid.org/0000-0002-1127-7836)
- Shasha Xue
Institutions
- Shanghai Jiao Tong University (CN)
- Southern University of Science and Technology (CN)
- Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area (CN)
Publication Details
- Journal
- Quantum Frontiers
- Published
- 2025-02-18
- DOI
- https://doi.org/10.1007/s44214-025-00076-6
- Citations
- 3
- Primary Topic
- Topological Materials and Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 3.74