تقرير
Ubiquitous stripe phase and enhanced electron pairing in interfacial high-Tc superconductor FeSe/BaTiO$_3$
| العنوان: | Ubiquitous stripe phase and enhanced electron pairing in interfacial high-Tc superconductor FeSe/BaTiO$_3$ |
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| المؤلفون: | Fan, Xuemin, Cui, Wenqiang, Yuan, Yonghao, Xue, Qi-Kun, Li, Wei |
| سنة النشر: | 2022 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Superconductivity |
| الوصف: | Monolayer FeSe grown on SrTiO$_3$ provides a new playground for high-Tc superconductivity. A recent study shows the importance of stripy instability for superconductivity enhancement in FeSe/SrTiO3. However, it is still under debate whether such a stripe phase is ubiquitously bound to the interfacial superconductivity. Here, we report on molecular beam epitaxy growth and low-temperature scanning tunneling microscopy study of FeSe films on BaTiO$_3$(001). We find that the stripe phase is more prominent in FeSe/BaTiO$_3$. Long-range stripes exist in bilayer and triple-layer FeSe films at 4 K and even persist up to 77 K in the case of bilayer FeSe, with enlarged superconducting gaps upon alkali-metal deposition. The results point out an intimate correlation between the interfacial superconductivity and the stripe phase. Comment: Comments are welcome |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.106.024517 |
| URL الوصول: | http://arxiv.org/abs/2206.05757 |
| رقم الأكسشن: | edsarx.2206.05757 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.106.024517 |
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