Journal article
Surface state lifetime in quasi-one-dimensional oxygen stripes on Cu(110)



Publication Details
Authors:
Matzdorf, R.
Publication year:
2006
Journal:
Surface Science
Pages range:
2581-2586
Volume number:
600
Start page:
2581
End page:
2586
ISSN:
0039-6028

Abstract
Scanning tunneling spectroscopy data on the lifetime and bottom energy of a surface state band in quasi-one-dimensional stripes are presented as a function of stripe width. The adsorbate system Cu(I I 0)-p(2 x 1)0 has been used to prepare a two-dimensional adsorbate layer and almost defect free quasi-one-dimensional stripes with a width of 3-15 CuO rows, respectively. The onset of an unoccupied surface state band (at 0.56 eV above Fermi-energy on the fully covered surface) has been analyzed with respect to the quasi-particle lifetime at the crossover from two to one dimension. A drastic increase of the onset-width with decreasing stripe width is observed. It can be explained by a decrease of quasi-particle lifetime using a Fabry-Perot-like model. We obtain a reduction of lifetime from 37 +/- 8 fs on the two-dimensional adsorbate layer to 5 I fs on a three CuO rows wide stripe. (c) 2006 Elsevier B.V. All rights reserved.


Authors/Editors

Last updated on 2019-01-11 at 16:05