2011/05/04 by A. V. Savin, Alexander V. Savin, Yuri S. Kivshar
Chemistry · Physics and Astronomy · #Advanced Fiber Laser Technologies #Algorithm #Computer science #Fullerene #Fullerene Chemistry and Applications #Materials science #Nanoclusters #Nanotechnology #Nonlinear Photonic Systems #Nonlinear system #Physics #Quantum mechanics #Relaxation (psychology) #Simple (philosophy) #Thermal conductivity #Thermodynamics #cond-mat.mes-hall #physics.atm-clus
paper · pdf · doi:10.1103/physrevb.85.125427
6 pages, 6 figures
arxiv created 2011/05/04 · openalex publication_date 2012/03/21 · arxiv updated 2015/05/28 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study the dynamics of nanoclusters composed of C60 fullerene molecules. We reveal that such composite nanostructures can support long-lived strongly localized nonlinear modes, which resemble discrete breathers in simple nonlinear lattices. In these localized modes, the vibrational energy density is localized predominantly at one of the C60 molecules, and it decays rapidly away from the mode. Our numerical simulations demonstrate that, at room temperatures, the lifetime of such nonlinear localized modes may exceed tens of picoseconds. Consequently, we observe that C60 nanoclusters demonstrate anomalously slow thermal relaxation when the temperature gradient decays in accord with a power law, thus violating the Cattaneo-Vernotte law of thermal conductivity.