论文标题
声子模式对高压原子氢的室温超导性的特定贡献
Phonon-mode specific contributions to room-temperature superconductivity in atomic hydrogen at high pressures
论文作者
论文摘要
我们研究了特定的声子模式对称性在较大压力下原子氢中室温超导性的作用。使用各向异性的Migdal-Eliashberg理论与密度功能理论的从头算输入，我们表明$ e_u $ phonon模式是获得如此高临界温度的主要驱动力。从400 GPA到600 GPA时，我们发现过渡温度升高，但是，总电子偶联强度会降低。我们的分析表明，这是由于$ e_u $ phonon模式对耦合强度的贡献增强所致。
We investigate the role of specific phonon mode symmetries for the room temperature superconductivity in atomic hydrogen under large pressure. Using anisotropic Migdal-Eliashberg theory with ab initio input from density functional theory, we show that the $E_u$ phonon modes are the dominant driving force for obtaining such high critical temperatures. When going from 400 to 600 GPa, we find an increased transition temperature, however, the total electron-phonon coupling strength is counterintuitively reduced. Our analysis reveals that this is due to an enhanced contribution to the coupling strength by the $E_u$ phonon mode.
