Theory of single adsorbate motion induced by vibrational excitation with scanning tunneling microscope

扫描隧道显微镜振动激发引起的单一吸附质运动理论

• 批准号: 15310071
• 负责人: UEBA Hiromu
• 金额: $ 3.58万
• 依托单位: University of Toyama
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15310071/
• 关键词: Scanning tunneling microscope; vibrational excitation; inelastic tunneling; adsorbed molecule; surface reaction; single molecule; 吸着; 非弾性トンネリング

We have developed the theory of single adsorbate motions and reactions induced by vibrational excitation with a scanning tunneling microscope (STM). In particular we have clarified a reaction process induced by a particular vibrational mode directly associated with the so-called reaction-coordinate (RC) mode, and the elementary processes induced by direct excitation of the RC-mode via a mode coupling with a high-frequency mode excited by tunneling electrons.We also studied a relation between the inelastic tunneling current and the vibrational generation rate, which has not been studied before. In doing so we were able to calculate the vibrational heating as well as a reaction rate induced by incoherent vibrational ladder climbing in the RC-potential well. A part of these work has been done with collaboration with Dr.B.N.J Persson (Institute of Solid State Physics, Juelich Germany) and Dr.N.Lorente (Paul-Sabatier University, Toulouse, France) under the support from Japan Society of Promotion of Science (JSPS)We also proposed a new theory of single adsorbate motions induced by two-electron processes. We have clarified the possible elementary processes how to activate the adsorbate motion following a twice excitation of the vibrational mode by two-tunneling electrons.With the support to this project, we are now one of the leading group in the theory of single adsorbate motions and reactions induced by vibrational excitation with STM.

我们发展了用扫描隧道显微镜（STM）研究振动激发引起的单个吸附物运动和反应的理论。特别地，我们阐明了与反应坐标（RC）模直接相关的特定振动模所引起的反应过程，以及RC模通过与隧穿电子激发的高频模耦合而直接激发所引起的基元过程，并研究了非弹性隧穿电流与振动产生率之间的关系，这是以前没有研究过的。在这样做的时候，我们能够计算振动加热以及由RC势阱中的非相干振动阶梯爬升引起的反应速率。在日本科学促进会（JSPS）的支持下，与德国Juelich固体物理研究所的B. N. J. J. Sson博士和法国图卢兹Paul-Sabatier大学的N.Lorente博士合作完成了部分工作。我们阐明了双隧穿电子两次激发振动模后激活吸附物运动的可能基本过程，在该项目的支持下，我们目前是STM振动激发诱导的单吸附物运动和反应理论的主要研究组之一。

项目成果

Elementary processes of vibrationally mediated motions of single adsorbed molecules,

单个吸附分子振动介导运动的基本过程，

• 发表时间: 2004
• 期刊: Applied Surface Science 207
• 作者: S.G.Tikhodeev;H.Ueba;H.Ueba
• 通讯作者: H.Ueba

Theory of inelastic tunneling and its relation to vibrational excitation in ladder climbing processes of single adsorbates

非弹性隧穿理论及其与单一吸附物爬梯过程中振动激励的关系

• 发表时间: 2005
• 期刊: Surface Science 587
• 作者: S.G.Tikhodeev;H.Ueba
• 通讯作者: H.Ueba

Theory of inelastic tunneling and its relation to vibrational excitation in ladder climbing processes of single adsorbates,

非弹性隧穿理论及其与单一吸附物爬梯过程中振动激励的关系，

• 发表时间: 2005
• 期刊: Surface Science 587
• 作者: S.G.Tikhodeev;H.Ueba
• 通讯作者: H.Ueba

Adsorbate motions induced by inelastic tunneling current : theoretical scenarios of two-electron processes

非弹性隧道电流引起的吸附运动：双电子过程的理论场景

• 发表时间: 2005
• 期刊: J.Chem.Phys. 123
• 作者: H.Ueba;T.Mii;N.Lorente;B.N.J.Persson
• 通讯作者: B.N.J.Persson

Relation between inelastic electron tunneling and vibrational excitation of single adsorbates on metal surfaces,

非弹性电子隧道效应与金属表面上单一吸附物的振动激发之间的关系，

• 发表时间: 2004
• 期刊: Physical Review 70
• 作者: S.G.Tikhodeev;H.Ueba
• 通讯作者: H.Ueba