弹性电子隧穿诱导的 Ag(100)上的氧原子离解。

Dissociation of oxygen on Ag(100) induced by inelastic electron tunneling.

机构信息

Institut für Festkörperphysik, Abteilung ATMOS, Leibniz Universität Hannover, Appelstrasse 2, D-30167 Hannover, Germany.

出版信息

J Phys Condens Matter. 2010 Jul 7;22(26):264005. doi: 10.1088/0953-8984/22/26/264005. Epub 2010 Jun 14.

DOI:10.1088/0953-8984/22/26/264005

PMID:21386462

Abstract

Scanning tunneling microscopy (STM) is used to study the dissociation of molecular oxygen on Ag(100) induced by inelastic electron tunneling (IET) at 5 K. This dissociation is possible above 3.3 V with a yield of (3.63 ± 0.47) × 10(-9) per electron. Dissociation leads to three different types of hot atom motion: lateral motion, a cannon ball mechanism, and abstractive dissociation. Analysis of the I-t characteristics during dissociation suggests that the dissociation is proceeded by an adsorption site change.

摘要

扫描隧道显微镜（STM）用于研究在 5 K 时通过非弹性电子隧穿（IET）诱导的 Ag（100）上的分子氧的离解。在 3.3 V 以上，每一个电子的产率为 (3.63 ± 0.47) × 10(-9)，这种离解是可能的。离解导致三种不同类型的热原子运动：横向运动、炮弹机制和抽象离解。在离解过程中分析 I-t 特性表明，离解是通过吸附位变化进行的。