تقرير
High quality Fe1+yTe synthesized by chemical vapor deposition with conspicuous vortex flow
| العنوان: | High quality Fe1+yTe synthesized by chemical vapor deposition with conspicuous vortex flow |
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| المؤلفون: | Lv, Lu, Hu, Lihong, Dong, Weikang, Duan, Jingyi, Wang, Ping, Li, Peiling, Qu, Fanming, Lu, Li, Ye, Zimeng, Zhao, Junhao, Li, Jiafang, Deng, Fang, Liu, Guangtong, Zhou, Jiadong, Gao, Yanfeng |
| سنة النشر: | 2024 |
| المجموعة: | Condensed Matter Physics (Other) |
| مصطلحات موضوعية: | Physics - Applied Physics, Condensed Matter - Materials Science |
| الوصف: | Two-dimensional (2D) materials provide an ideal platform to explore novel superconducting behavior including Ising superconductivity, topological superconductivity and Majorana bound states in different 2D stoichiometric Ta-, Nb-, and Fe-based crystals. However, tuning the element content in 2D compounds for regulating their superconductivity has not been realized. In this work, we report the synthesis of high quality Fe1+yTe with tunable Fe content by chemical vapor deposition (CVD). The quality and composition of Fe1+yTe are characterized by Raman spectroscopy, X-ray photoelectron spectroscopy (XPS) and scanning transmission electron microscopy (STEM). The superconducting behavior of Fe1+yTe crystals with varying Fe contents is observed. The superconducting transition of selected Fe1.13Te sample is sharp ({\Delta}Tc = 1 K), while Fe1.43Te with a high-Fe content shows a relative broad superconducting transition ({\Delta}Tc = 2.6 K) at zero magnetic field. Significantly, the conspicuous vortex flow and a transition from a 3D vortex liquid state to a 2D vortex liquid state is observed in Fe1.43Te sample. Our work highlights the tunability of the superconducting properties of Fe1+yTe and sheds light on the vortex dynamics in Fe-based superconductors, which facilitates us to understand the intrinsic mechanisms of high-temperature superconductivity. Comment: 30 pages, 15 figures, accepted by Advanced Functional Materials |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1002/adfm.202401748 |
| الوصول الحر: | http://arxiv.org/abs/2404.02420Test |
| رقم الانضمام: | edsarx.2404.02420 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1002/adfm.202401748 |
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