Report
Evidence for multiband gapless superconductivity in the topological superconductor candidate 4Hb-TaS2
| العنوان: | Evidence for multiband gapless superconductivity in the topological superconductor candidate 4Hb-TaS2 |
|---|---|
| المؤلفون: | Wang, Hanru, Jiao, Yihan, Meng, Fanyu, Zhang, Xu, Dai, Dongzhe, Tu, Chengpeng, Zhao, Chengcheng, Xin, Lu, Huang, Sicheng, Lei, Hechang, Li, Shiyan |
| سنة النشر: | 2024 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Superconductivity, Condensed Matter - Materials Science, Condensed Matter - Strongly Correlated Electrons |
| الوصف: | We present the ultralow-temperature thermal conductivity measurements on single crystals of transition-metal dichalcogenide material 4Hb-TaS$_{2}$, which has recently been proposed as a topological superconductor candidate. In zero field, a small residual linear term $\kappa_{0}/T$ is observed, indicating the existence of a residual density of states in the superconducting state. The slow field dependence of $\kappa_{0}/T$ at low fields rules out the presence of nodes in the superconducting gap, and the S-shaped field dependence across the full field range suggests multiple superconducting gaps in 4Hb-TaS$_{2}$. Our results provide evidence for multiband gapless superconductivity in 4Hb-TaS$_{2}$, and the residual density of states come from certain gapless Fermi surfaces. Comment: 8 pages, 4 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2412.08450 |
| رقم الانضمام: | edsarx.2412.08450 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |