论文标题
具有振动的驱动系统中的量子传输：floquet nonquilibrium green的功能和GD近似
Quantum transport in driven systems with vibrations: Floquet nonequilibrium Green's functions and the GD approximation
论文作者
论文摘要
我们研究了交替电压对具有局部声子模式的非平衡量子系统的影响。使用了非平衡绿色的功能，并考虑使用$ gd $近似值（自一致生生近似）的电子 - phonon耦合。使用Floquet方法，我们假设动力学的周期性。这种方法使我们能够研究驱动的电子组件对振动非平衡占用的影响。发现非弹性运输的特征获得了光子辅助峰。提出了一个简单的模型，并在某些参数范围内与完整模型非常吻合。此外，发现在共振时以振动频率驱动交替电流导致声子占用增加。
We investigate the effects of alternating voltage on nonequilibrium quantum systems with localised phonon modes. Nonequilibrium Green's functions are utilised, with electron-phonon coupling being considered with the $GD$ approximation (self-consistent Born approximation). Using a Floquet approach, we assume periodicity of the dynamics. This approach allows us to investigate the influence of the driven electronic component on the nonequilibrium occupation of the vibrations. It was found that signatures of inelastic transport gained photon-assisted peaks. A simplistic model was proposed and found to be in good agreement with the full model in certain parameter ranges. Moreover, it was found that driving the alternating current at resonance with vibrational frequencies caused an increase in phonon occupation.
