Multipolar Excitations in Small Metallic Spheres

  • F. Claro
  • R. Fuchs


The polarizability α(ω) appropriate to a small metallic sphere is obtained within the semiclassical infinite barrier model, where ℓ is the multipole order. An excitation diagram in the ℓ,ω plane based on the structure of this function is proposed. It represents the spherical analog of the excitation structure of an infinite medium in the k, ω plane.


Dielectric Function Pole Order Bulk Plasmon Multipole Order Dielectric Response Function 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    H. Fröhlich, “Theory of Dielectrics,” Oxford Univ. Press, (1948).Google Scholar
  2. 2.
    For a review see U. Kreibig and L. Genzel, Surf. Sci. 156:678 (1985).ADSCrossRefGoogle Scholar
  3. 3.
    P. E. Batson, Phys. Rev. Lett. 49:936 (1982).ADSCrossRefGoogle Scholar
  4. 4.
    R. Ruppin, Phys. Rev. B 11:2871 (1975).ADSCrossRefGoogle Scholar
  5. 5.
    B. B. Dasgupta and R. Fuchs, Phys. Rev. B 24:554 (1981).ADSCrossRefGoogle Scholar
  6. 6.
    W. Eckardt, Phys. Rev. Lett. 52:1925 (1984).ADSCrossRefGoogle Scholar
  7. 7.
    R. Fuchs and F. Claro, to be published.Google Scholar
  8. 8.
    The parameters used for tin are ωp = 1.17 x l016 sec-1, vF = 1.24xl08 cm/sec and as a mean free path, the sphere radius.Google Scholar

Copyright information

© Plenum Press, New York 1987

Authors and Affiliations

  • F. Claro
    • 1
  • R. Fuchs
    • 2
  1. 1.Oak Ridge National LaboratoryOak RidgeUSA
  2. 2.Ames Laboratory and Iowa State UniversityAmesUSA

Personalised recommendations