3D Ising Superconductivity in As-Grown Sn Intercalated TaSe<sub>2</sub> Crystal
2D Ising superconductivity emerges in noncentrosymmetric 2D materials, differing from conventional 2D/3D superconductivity. Here, we report the synthesis of a new polymorph of intercalated layered materials, where two layers of Sn are intercalated in between every two layers of TaSe<sub>2</sub> (2Sn-2TaSe<sub>2</sub>), in contrast to the commonly observed single-layer intercalation. Remarkably, the as-grown 2Sn-2TaSe<sub>2</sub> single crystals possess a high quality of crystallinity and showcase 3D Ising superconductivity. Transport measurements and theoretical calculations show that the 2Sn-2TaSe<sub>2</sub> having C<sub><i>3v</i></sub> point group symmetry induces formation of Ising pairs, which intriguingly exhibits, on one hand, an in-plane upper critical field surpassing the Pauli limit by a factor of 2.6 like a 2D Ising superconductor but, on the other hand, a temperature- and field-dependent conductivity characteristic of conventional 3D superconductivity. Our findings demonstrate the persistent 2D Ising pairing in 3D, paving the way for exploring dimensional physical behaviors by intercalating layered materials.
Authors
- Ruimin Li (ORCID: https://orcid.org/0009-0005-7709-7773)
- Shengyuan A. Yang (ORCID: https://orcid.org/0000-0001-6003-1501)
- C. H. Wang (ORCID: https://orcid.org/0000-0002-4663-7221)
- Bin Xiang (ORCID: https://orcid.org/0000-0001-8254-8640)
- Ben‐Chuan Lin (ORCID: https://orcid.org/0000-0002-9309-707X)
- Xiaoming Zhang (ORCID: https://orcid.org/0000-0003-0756-9526)
- Chuanying Xi (ORCID: https://orcid.org/0000-0003-3179-7019)
- Zhongkai Liu (ORCID: https://orcid.org/0000-0003-3373-8039)
- Lain‐Jong Li (ORCID: https://orcid.org/0000-0002-4059-7783)
- Wenguang Zhu (ORCID: https://orcid.org/0000-0003-0819-595X)
- Z.Y. Li (ORCID: https://orcid.org/0009-0008-8574-5621)
- Jin Cao (ORCID: https://orcid.org/0000-0001-6846-2947)
- Bo Zheng (ORCID: https://orcid.org/0000-0001-9703-6365)
- Feng Liu
- Peng Li (ORCID: https://orcid.org/0000-0001-8633-9045)
- Kaipu Wang
- Jingmin Zhang (ORCID: https://orcid.org/0000-0002-2765-6574)
- Haige Tan (ORCID: https://orcid.org/0009-0001-1230-2271)
- Yalin Lü (ORCID: https://orcid.org/0000-0001-8757-5576)
Institutions
- University of Science and Technology of China (CN)
- Chinese University of Hong Kong (HK)
- Chinese Academy of Sciences (CN)
- Peking University (CN)
- University of Macau (MO)
- University of Utah (US)
- Hefei Institutes of Physical Science (CN)
- Southern University of Science and Technology (CN)
- ShanghaiTech University (CN)
- Hefei University (CN)
- Joint Laboratory for Extreme Conditions Matter Properties (CN)
- Quantum (Australia) (AU)
- High Magnetic Field Laboratory (CN)
- Hefei National Center for Physical Sciences at Nanoscale (CN)
- Division of Materials Science and Engineering (AU)
- Quantum Design (Germany) (DE)
- Austrian Centre for Electron Microscopy and Nanoanalysis (AT)
- Ocean University of China (CN)
- University of Hong Kong (HK)
Publication Details
- Journal
- Nano Letters
- Published
- 2025-03-17
- DOI
- https://doi.org/10.1021/acs.nanolett.5c00196
- Citations
- 2
- Primary Topic
- 2D Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 1.04
Funders
- National Natural Science Foundation of China
- Ministry of Science and Technology of the People's Republic of China
- National Key Research and Development Program of China
- Basic Energy Sciences