Abstract
We demonstrate the contribution of coherent excitation pathways in three-photon photoemission from Cu(001). We identify separate peaks in the photoelectron spectra as originating from two specific Cud bands that are excited at different k points via the same unoccupied image-potential state. By model calculations we show that our experimental observations impose lower limits on the relevant Cud -hole dephasing time on the order of 10-20 fs. Our findings suggest extensions to future studies in electronic structure mapping with tunable laboratory and free-electron laser sources, exploiting possible multiphoton resonances between occupied bulk and unoccupied surface states.
| Original language | English |
|---|---|
| Article number | 155128 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 80 |
| Issue number | 15 |
| DOIs | |
| Publication status | Published - 2009 Oct 20 |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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Resonant coherent three-photon photoemission from Cu(001). / Winkelmann, Aimo; Lin, Wen Chin; Chiang, Cheng Tien; Bisio, Francesco; Petek, Hrvoje; Kirschner, Jürgen.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 80, No. 15, 155128, 20.10.2009.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Resonant coherent three-photon photoemission from Cu(001)
AU - Winkelmann, Aimo
AU - Lin, Wen Chin
AU - Chiang, Cheng Tien
AU - Bisio, Francesco
AU - Petek, Hrvoje
AU - Kirschner, Jürgen
PY - 2009/10/20
Y1 - 2009/10/20
N2 - We demonstrate the contribution of coherent excitation pathways in three-photon photoemission from Cu(001). We identify separate peaks in the photoelectron spectra as originating from two specific Cud bands that are excited at different k points via the same unoccupied image-potential state. By model calculations we show that our experimental observations impose lower limits on the relevant Cud -hole dephasing time on the order of 10-20 fs. Our findings suggest extensions to future studies in electronic structure mapping with tunable laboratory and free-electron laser sources, exploiting possible multiphoton resonances between occupied bulk and unoccupied surface states.
AB - We demonstrate the contribution of coherent excitation pathways in three-photon photoemission from Cu(001). We identify separate peaks in the photoelectron spectra as originating from two specific Cud bands that are excited at different k points via the same unoccupied image-potential state. By model calculations we show that our experimental observations impose lower limits on the relevant Cud -hole dephasing time on the order of 10-20 fs. Our findings suggest extensions to future studies in electronic structure mapping with tunable laboratory and free-electron laser sources, exploiting possible multiphoton resonances between occupied bulk and unoccupied surface states.
UR - http://www.scopus.com/inward/record.url?scp=71449110037&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=71449110037&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.80.155128
DO - 10.1103/PhysRevB.80.155128
M3 - Article
AN - SCOPUS:71449110037
VL - 80
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 1098-0121
IS - 15
M1 - 155128
ER -