Lévy statistics of vibrational mode fluctuations of single molecules from surface-enhanced Raman scattering.

作者: Anna Rita Bizzarri , Salvatore Cannistraro

DOI: 10.1103/PHYSREVLETT.94.068303

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摘要: Surface-enhanced Raman spectra of a single Fe-protoporphyrin IX molecule display drastic fluctuations in frequency and intensity. When analyzed their temporal evolution, the vibrational modes undergo an on-off switching behavior that is shown to follow Levy statistics. Such time dependent process may encode both dynamics molecule-environment interactions intrinsic gating or activation mode emission mechanism.

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