Ultrafast Dynamics Revealed with Time-Resolved Scanning Tunneling Microscopy: A Review

被引：16

作者：

Liang, Kangkai ^{[1
,2
]}

Bi, Liya ^{[1
,2
]}

Zhu, Qingyi ^{[1
]}

Zhou, Hao ^{[1
,2
]}

Li, Shaowei ^{[1
,2
]}

机构：

[1] Univ Calif San Diego, Dept Chem & Biochem, La Jolla, CA 92093 USA

[2] Univ Calif San Diego, Mat Sci & Engn Program, La Jolla, CA 92093 USA

来源：

ACS APPLIED OPTICAL MATERIALS | 2023年 / 1卷 / 05期

基金：

美国国家科学基金会;

关键词：

scanning tunneling microscopy; pump-probe spectroscopy; nanoscale ultrafast dynamics; ENHANCED RAMAN-SPECTROSCOPY; SINGLE-MOLECULE; ELECTRON-SPIN; SURFACE-DIFFUSION; INDIVIDUAL ATOMS; CHARGE-TRANSFER; HYDROGEN-ATOMS; MANIPULATION; NANOSCALE; RESOLUTION;

D O I：

10.1021/acsaom.2c00169

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A scanning tunneling microscope (STM) capable of performing pump-probe spectroscopy integrates unmatched atomic-scale resolution with high temporal resolution. In recent years, the union of electronic, terahertz, or visible/near-infrared pulses with STM has contributed to our understanding of the atomic-scale processes that happen between milliseconds and attoseconds. This time-resolved STM (TR-STM) technique is evolving into an unparalleled approach for exploring the ultrafast nuclear, electronic, or spin dynamics of molecules, low-dimensional structures, and material surfaces. Here, we review the recent advancements in TR-STM; survey its application in measuring the dynamics of three distinct systems, nucleus, electron, and spin; and report the studies on these transient processes in a series of materials. Besides the discussion on state-of-the-art techniques, we also highlight several emerging research topics about the ultrafast processes in nanoscale objects where we anticipate that the TR-STM can help broaden our knowledge.

引用

页码：924 / 938

页数：15