| Issue |
Europhys. Lett.
Volume 65, Number 5, March 2004
|
|
|---|---|---|
| Page(s) | 692 - 698 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2003-10161-8 | |
| Published online | 01 February 2004 | |
Strong subthreshold photoemission from 
islands
1
Hahn-Meitner-Institut, SE 6 - 14109 Berlin, Germany
2
Lehrstuhl für Oberflächenwissenschaft (IPkM) Heinrich-Heine-Universität Düsseldorf 40225 Düsseldorf, Germany
Received:
19
May
2003
Accepted:
11
December
2003
Epitaxial silver islands of (111) orientation of 50–100
diameter and multilayer thickness grow without strain on
. Besides the common photoelectron emission (PE) out
of the occupied Shockley surface state S1 on strong
subthreshold PE is observed at photon energies down to 0.7
below the work function of and with final energies
down to 0.7 below the vacuum level of . The
subthreshold PE is assigned to direct transitions into the image
potential states (IS) 
and 
and an elastic escape
from these states into vacuum. The escape path is tentatively
assigned to the area of the slopes of the islands where the local
work function is reduced.
PACS: 73.20.At – Surface states, band structure, electron density of states / 79.60.Jv – Interfaces; heterostructures; nanostructures
© EDP Sciences, 2004
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.