Journal article
Nanoscale depth-resolved coherent femtosecond motion in laser-excited bismuth



Publication Details
Authors:
Johnson, S.; Beaud, P.; Milne, C.; Krasniqi, F.; Zijlstra, E.; Garcia, M.; Kaiser, M.; Grolimund, D.; Abela, R.; Ingold, G.
Publication year:
2008
Journal:
Physical Review Letters
Pages range:
155501
Journal acronym:
PRL
Volume number:
100
ISSN:
0031-9007
eISSN:
1079-7114

Abstract
We employ grazing-incidence femtosecond x-ray diffraction to characterize the coherent, femtosecond laser-induced lattice motion of a bismuth crystal as a function of depth from the surface with a temporal resolution of 193 +/- 8 fs. The data show direct consequences on the lattice motion from carrier diffusion and electron-hole interaction, allowing us to estimate an effective diffusion rate of D=2.3 +/- 0.3 cm(2)/s for the highly excited carriers and an electron-hole interaction time of 260 +/- 20 fs.


Authors/Editors

Last updated on 2019-01-11 at 16:06