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Photon Energy Dependent Valence Band Response of Metallic Nanoparticles

Jankala, K.; Tchaplyguine, Maxim LU ; Mikkela, M. -H.; Bjorneholm, O. and Huttula, M. (2011) In Physical Review Letters 107(18).
Abstract
We show that the valence band response to photon impact in metallic nanoparticles is highly energy dependent. This is seen as drastic variations of cross sections in valence photoionization of free and initially charge-neutral nanosized metal clusters. The effect is demonstrated in a combined experimental and theoretical study of Rb clusters. The experimental findings are interpreted theoretically using a jellium model and superatom description. The variations are attributed to the changing overlap with the photon energy between the wave functions of diffuse delocalized valence electrons and continuum electrons producing a series of minima in the cross section.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
107
issue
18
publisher
American Physical Society
external identifiers
  • wos:000296985900005
  • scopus:80054930701
ISSN
1079-7114
DOI
10.1103/PhysRevLett.107.183401
language
English
LU publication?
yes
id
8768a7c1-8f3a-4199-abc8-72044d65b210 (old id 2252563)
date added to LUP
2011-12-22 10:57:09
date last changed
2017-03-05 03:11:53
@article{8768a7c1-8f3a-4199-abc8-72044d65b210,
  abstract     = {We show that the valence band response to photon impact in metallic nanoparticles is highly energy dependent. This is seen as drastic variations of cross sections in valence photoionization of free and initially charge-neutral nanosized metal clusters. The effect is demonstrated in a combined experimental and theoretical study of Rb clusters. The experimental findings are interpreted theoretically using a jellium model and superatom description. The variations are attributed to the changing overlap with the photon energy between the wave functions of diffuse delocalized valence electrons and continuum electrons producing a series of minima in the cross section.},
  articleno    = {183401},
  author       = {Jankala, K. and Tchaplyguine, Maxim and Mikkela, M. -H. and Bjorneholm, O. and Huttula, M.},
  issn         = {1079-7114},
  language     = {eng},
  number       = {18},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {Photon Energy Dependent Valence Band Response of Metallic Nanoparticles},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.107.183401},
  volume       = {107},
  year         = {2011},
}