| Issue |
Europhys. Lett.
Volume 60, Number 6, December 2002
|
|
|---|---|---|
| Page(s) | 903 - 909 | |
| Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
| DOI | https://doi.org/10.1209/epl/i2002-00303-0 | |
| Published online | 01 December 2002 | |
Honeycomb chain-channel (HCC) signature in the
calcium-induced 
-
surface
Institut de Physique, Université de
Neuchâtel Rue A.-L. Breguet 1, CH-2000 Neuchâtel,
Switzerland
Received:
8
July
2002
Accepted:
2
October
2002
The electronic and structural properties of a calcium-induced
chain system on have been studied. Low-energy
electron diffraction measurements clearly reveal a
periodicity and the 
coverage is determined to be 1/6
monolayer. Angle-resolved photoemission measurements have been
performed with two different light polarizations in order to
study the symmetries of the surface states. In both polarizations
no band crossing the Fermi level 
is found. The three
detected surface state bands are in good agreement with
theoretical calculations in the honeycomb chain-channel (HCC)
model for an insulating case.
PACS: 73.20.At – Surface states, band structure, electron density of states / 79.60.-i – Photoemission and photoelectron spectra / 68.35.-p – Solid surfaces and solid-solid interfaces: Structure and energetics
© EDP Sciences, 2002
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