تقرير
Superconductivity in La$_4$Ni$_3$O$_{10}$ Under Pressure
| العنوان: | Superconductivity in La$_4$Ni$_3$O$_{10}$ Under Pressure |
|---|---|
| المؤلفون: | Lu, Chen, Pan, Zhiming, Yang, Fan, Wu, Congjun |
| سنة النشر: | 2024 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Superconductivity, Condensed Matter - Strongly Correlated Electrons |
| الوصف: | Recently, signature of superconductivity (SC) in the trilayer compound La$_{4}$Ni$_3$O$_{10}$ has ignited significant interest. In this study, we propose a trilayer $E_g$ orbital $t$-$J_{\parallel}$-$J_{\perp}$ model to gain insights into the superconducting behavior in this material. In the strong coupling limit, each layer is described by a $t$-$J_{\parallel}$ model with intra-layer exchange $J_{\parallel}$, while electrons can hop between layers and interact through inter-layer exchange $J_{\perp}$. Notably, the inner-layer $3d_{z^2}$-orbital electrons exhibit the potential to form bonding bands with those in the upper or lower layer. The superconducting behavior is predominantly driven by the $3d_{z^2}$ orbital, resulting in an intra-layer extended $s$-wave pairing in the outer layers, along with an inter-layer pairing. Furthermore, electron doping tends to enhance the superconductivity, while hole doping suppresses it. These findings shed light on the intriguing SC of La$_{4}$Ni$_3$O$_{10}$ and its response to charge doping. Comment: 6 pages, 5 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2402.06450 |
| رقم الأكسشن: | edsarx.2402.06450 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |