Probing the surface structure via the adsorbed hydrogen atoms – The case of Cu(4 1 0)

We show how we could determine (or at least qualitatively deduce) the displacements of surface atoms with respect to an arbitrarily chosen reference, from the trends in the vibrational frequencies of adsorbed hydrogen atoms. The discernible displacement could be as small as 0.1 Å. As a test structur...

Full description

Saved in:
Bibliographic Details
Main Authors: Gueriba, Jessiel Siaron, Diño, Wilson Agerico, Mizuno, Seigi, Okada, Michio
Format: text
Published: Animo Repository 2020
Subjects:
Online Access:https://animorepository.dlsu.edu.ph/faculty_research/1412
https://animorepository.dlsu.edu.ph/context/faculty_research/article/2411/type/native/viewcontent
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: De La Salle University
Description
Summary:We show how we could determine (or at least qualitatively deduce) the displacements of surface atoms with respect to an arbitrarily chosen reference, from the trends in the vibrational frequencies of adsorbed hydrogen atoms. The discernible displacement could be as small as 0.1 Å. As a test structure, we consider the case of Cu(4 1 0), which has remained contentious, until recently. Any slight (ca. 0.1 Å) displacement of Cu(4 1 0) surface atoms with respect to an arbitrarily chosen reference structure manifests as either a broadening or narrowing of the corresponding H-Cu(4 1 0) potential energy curve. This suggests the possibility of carry out adsorbate mediated surface analysis, with hydrogen as the (chosen) adsorbate, in this case. © 2020 Elsevier B.V.