论文标题
部分可观测时空混沌系统的无模型预测
Superconducting properties of doped blue phosphorene: Effects of non-adiabatic approach
论文作者
论文摘要
我们研究了Kohn异常对单层蓝磷烯的电子和孔掺杂的超导性能的影响，考虑到使用第一原则计算的绝热和非绝热的声子分散剂。我们表明，费米表面的拓扑对于形成掺杂的蓝色磷酸的Kohn异常至关重要。通过使用各向异性Eliashberg形式主义，我们进一步仔细考虑了非绝热声子分散体的温度依赖性。在低孔密度的情况下，强的电子偶联导致超导性的最大临界温度为$ t_c = 97 $ k。另一方面，在电子兴奋剂方面，在包括Lifshitz过渡点的兴奋剂水平上达到了$ T_C = 38 $ K的最大超导临界温度。此外，我们的结果表明，电子 - 音波耦合的最突出的成分是由电子（孔（孔）电子（孔）类型掺杂的平面内（平面外）变形和平面内（平面外）电子状态之间的耦合。
We study the effects of Kohn anomalies on the superconducting properties in electron- and hole-doped cases of monolayer blue phosphorene, considering both adiabatic and non-adiabatic phonon dispersions using first-principles calculations. We show that the topology of the Fermi surface is crucial for the formation of Kohn anomalies of doped blue phosphorene. By using the anisotropic Eliashberg formalism, we further carefully consider the temperature dependence of the non-adiabatic phonon dispersions. In cases of low hole densities, strong electron-phonon coupling leads to a maximum critical temperature of $T_c=97$ K for superconductivity. In electron-doped regimes, on the other hand, a maximum superconducting critical temperature of $T_c=38$ K is reached at a doping level that includes a Lifshitz transition point. Furthermore, our results indicate that the most prominent component of electron-phonon coupling arises from the coupling between an in-plane (out-of-plane) deformation and in-plane (out-of-plane) electronic states of the electron (hole) type doping.
