论文标题
通过隧道显微镜跟踪分子中的电子振荡
Tracking the electronic oscillation in molecule with tunneling microscopy
论文作者
论文摘要
在飞秒时间尺度上可视化和控制电子动力学在下一代电子设备的设计中起关键作用。使用模拟，我们证明了萘分子内部的电子振荡可以通过调整两个相同的飞秒激光脉冲之间的延迟时间来跟踪。通过扫描隧道显微镜的连接，通过隧道电荷检测到振荡的频率和衰减时间。对于几个周期长的光学脉冲，隧道电荷对载体 - 内玻璃相（CEP）敏感。尽管这种对CEP的敏感性将随着时间长度的脉冲增加而消失。我们的仿真结果表明，可以通过一两个飞秒激光脉冲可视化和控制分子内部的电子动力学。
Visualizing and controlling electron dynamics over femtosecond timescale play a key role in the design of next-generation electronic devices. Using simulations, we demonstrate the electronic oscillation inside the naphthalene molecule can be tracked by means of the tuning of delay time between two identical femtosecond laser pulses. Both the frequency and decay time of the oscillation are detected by the tunneling charge through the junction of scanning tunneling microscopy. And the tunneling charge is sensitive to the carrier-envelope phase (CEP) for few-cycle long optical pulses. While this sensitivity to CEP will disappear with the increase of time-length of pulses. Our simulation results show that it is possible to visualize and control the electron dynamics inside the molecule by one or two femtosecond laser pulses.
