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The determination of an inhomogeneous linewidth for a strongly coupled adsorbate system
We present a set of experiments that provide a complete mapping of coherent and incoherent vibrational relaxation times for a molecule on a metal surface, C O ∕ Ir { 111 } . Included is the first detection of a midinfrared photon echo from a metallic surface, some 15 years after the analogous measur...
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| Published in: | The Journal of chemical physics 2007-01, Vol.126 (2), p.024707-024707-5 |
|---|---|
| Main Authors: | , , |
| Format: | Article |
| Language: | English |
| Citations: | Items that this one cites Items that cite this one |
| Online Access: | Get full text |
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| Summary: | We present a set of experiments that provide a complete mapping of coherent and incoherent vibrational relaxation times for a molecule on a metal surface,
C
O
∕
Ir
{
111
}
. Included is the first detection of a midinfrared photon echo from a metallic surface, some
15
years
after the analogous measurement on a semiconductor surface, which sets a precedent for the ability to manipulate and rephase polarization on a subpicosecond time scale on surfaces. For the C-O stretch in a strongly dipole-coupled CO layer we obtain a total linewidth of
5.6
cm
−
1
, composed of a homogeneous width of
2.7
cm
−
1
and an inhomogeneous contribution of
3.0
cm
−
1
. Pure dephasing is negligible at liquid nitrogen temperatures, making
C
O
∕
Ir
{
111
}
an attractive model system for quantum computing. |
|---|---|
| ISSN: | 0021-9606 1089-7690 |
| DOI: | 10.1063/1.2408413 |