.png){kind=icon}
返回
Algorithm for subcycle terahertz scanning tunneling spectroscopy
.png){kind=icon}
OA
AI
DOI：10.1103/PhysRevB.105.115427.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Terahertz scanning tunneling microscopy (THz-STM) enables ultrafast measurements of surfaces, single molecules, and nanostructures with simultaneous subpicosecond temporal resolution and atomic spatial resolution. In pump-probe THz-STM experiments employing femtosecond optical pump pulses, lightwave-driven tunneling by a time-delayed THz probe pulse accesses the evolving differential conductance of the tunnel junction following photoexcitation. However, a general theoretical approach to extract the time-and voltage dependent differential conductance from THz-STM measurements is lacking. Here, we introduce an algorithm for pump-probe THz scanning tunneling spectroscopy (THz-STS) analysis. Our approach allows us to reliably reconstruct the tunnel junction???s differential conductance in steady-state or time-dependent scenarios from simulated THz-STS data. The algorithm achieves subcycle time resolution, which we demonstrate by retrieving dynamics faster than the bandwidth of the input THz voltage transient. Subcycle THz-STS will make lightwavedriven microscopy yet more powerful as a tool for characterizing ??ngstr??m-scale ultrafast dynamics in novel materials.
Keyword:
SINGLE-MOLECULE
MICROSCOPY
JUNCTION
DRIVEN
MOTION
期刊
IF:
3.7
论文数:
15.4W
被引数:
41.0W
机构
引用论文
分享收藏Terahertz Scanning Tunneling Microscopy for Visualizing Ultrafast Electron Motion in Nanoscale Potential Variations用于可视化纳米级电势变化中的超快电子运动的太赫兹扫描隧道显微镜.png)
ACS PHOTONICS
OAAI
ACS PHOTONICSIF6.7
OAAI分享收藏Ultrafast multi-terahertz nano-spectroscopy with sub-cycle temporal resolutionNATURE PHOTONICS
NATURE PHOTONICSIF32.9
PREAI
分享收藏
查看更多内容