Untitled - IAP/TU Wien - Technische Universität Wien

71st IUVSTA Workshop
Effects of sudden photo electron-hole pair creation on the induced surface plasmon excitations
in cylindrical nanorods
Juana L. Gervasoni, 1,* !"#$%&$'()*+ ,
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*gervason@cab.cnea.gov.ar
In this work we study the effect of the excitation of surface plasmons in a metallic cylindrical
nanorod by a suddenly created electron-hole pair, using a classical model for the emerging electron and a
quantum-mechanical model for the plasmon field in the cylinder [1]. The emitted electron and the hole interact
independently with the free electrons in the metallic Al, generating electron density oscillations. Two different
trajectories for the emerging electron (parallel to the axis and radial) are studied in an aluminum nanorod. The
average number of excited plasmons indicates how important the role of the hole in the excitation process is.
We found that the results can be very different according to the trajectory of the emerging electron. We also
found that the separation of the intrinsic and extrinsic process is sometimes not applicable.
References
[1] J.A. García Gallardo, J. L. Gervasoni, L. Kövér. Vacuum, 84 (2010) 258.
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