分子线的共振laser激发
Resonant laser excitation of molecular wires
摘要：
我们研究了外部激光激发对桥连分子平均电流的影响。对于当前的计算，我们使用一个数值上非常有效的形式主义，是基于Floquet解决方案的时间依赖的分子哈密顿量。据发现，作为激光频率的函数的电流具有源自电子的共振激发的特征峰，以桥接在没有辐射的情况下未被占用的水平。通过分子的电流可以表现出几个数量级的急剧增强。
英文摘要：
We investigate the influence of external laser excitations on the average current through bridged molecules. For the computation of the current, we use a numerically very efficient formalism that is based on the Floquet solutions of the time-dependent molecule Hamiltonian. It is found that the current as a function of the laser frequency exhibits characteristic peaks originating from resonant excitations of electrons to bridge levels which are unoccupied in the absence of the radiation. The electrical current through the molecule can exhibit a drastic enhancement by several orders of magnitude.
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