Display Settings:

Format

Send to:

Choose Destination
See comment in PubMed Commons below
Phys Rev Lett. 2001 Oct 15;87(16):167401. Epub 2001 Sep 27.

Localization versus delocalization of surface plasmons in nanosystems: can one state have both characteristics?

Author information

  • 1Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30303, USA. mstockman@gsu.edu

Abstract

From a partial-differential eigenproblem, without use of dipole approximation, we show that the eigenmodes (surface plasmons) of disordered nanosystems (modeled as random planar composites) are not universally Anderson localized, but can have properties of both localized and delocalized states simultaneously. Their topology is determined by separate small-scale "hot spots" that are distributed and coherent over a length that may be comparable to the total size of the system. Coherence lengths and oscillator strengths vary by orders of magnitude from mode to mode at nearby frequencies. The existence of dark vs luminous eigenmodes is established and attributed to the effect of charge- and parity-conservation laws. Possible applications are discussed.

PMID:
11690242
[PubMed]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Icon for American Physical Society
    Loading ...
    Write to the Help Desk