Fluctuations of the local density of states probe localized surface plasmons on disordered metal films |
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Authors: | Krachmalnicoff V Castanié E De Wilde Y Carminati R |
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Affiliation: | Institut Langevin, ESPCI ParisTech, CNRS, 10 rue Vauquelin, 75231 Paris Cedex 05, France. |
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Abstract: | We measure the statistical distribution of the local density of optical states (LDOS) on disordered semicontinuous metal films. We show that LDOS fluctuations exhibit a maximum in a regime where fractal clusters dominate the film surface. These large fluctuations are a signature of surface-plasmon localization on the nanometer scale. |
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