@article{Wu2026, 
author = {Junjie Wu and Xiaoming Zhang and Tongrui Li and Chunsheng Wang and Changlong Wang and Yan Feng and Xiang Ma and Zhe Sun and Yalin Lu and Guolin Zheng and Feng Liu and Bin Xiang},
title = {Self-assembled SnS/TaS2 superconducting superlattice with non-trivial band topology},
year = {2026},
journal = {Nano Research},
volume = {19},
number = {1},
pages = {94907811},
keywords = {self-assembled, superconductivity, superlattice, band topology},
url = {https://www.sciopen.com/article/10.26599/NR.2025.94907811},
doi = {10.26599/NR.2025.94907811},
abstract = {Intrinsic topological superconductors have garnered significant attention for their potential to harbor novel quantum phenomena. However, the limited availability of suitable material systems has hindered progress in this field. Here, we present the synthesis and characterization of high-quality self-assembled SnS/TaS2 (SnTaS3) superlattice, which exhibits superconductivity alongside non-trivial band topology. Temperature-dependent magnetization susceptibility and electrical transport results confirm SnTaS3 as a type-II superconductor with a critical transition temperature Tc of 3 K. Interestingly, this superconductivity can be turned off via an innovative solid proton gate technique, and a new superconducting state with a Tc of ~ 2.3 K emerges when the gating voltage reaches −9.47 V. Heat capacity measurements reveal strong electronic correlations within this material, which is further supported by angle-resolved photoemission spectroscopy and first-principles calculations, underscoring the effect of topological flat bands and Van Hove singularity. Our research introduces a promising self-assembled material platform, adeptly positioned to delve into the quest for topological superconductors.}
}