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- W2510597551 abstract "Abstract We provide molecular dynamics simulation of heat transport and energy diffusion in one-dimensional molecular chains with different interparticle pair potentials at zero and non-zero temperature. We model the thermal conductivity (TC) and energy diffusion (ED) in the chain of coupled rotators and in the Lennard-Jones chain either without or with the confining parabolic interparticle potential. The considered chains without the confining potential have normal TC and ED at non-zero temperature, while the corresponding chains with the confining potential are characterized by anomalous (diverging with the system length) TC and superdiffusion of energy. Similar effect is produced by the anharmonic quartic confining pair potential. We confirm in such a way that, surprisingly, the confining pair potential makes both heat transport and energy diffusion anomalous in one-dimensional phononic systems. We show that the normal TC is always accompanied by the normal ED in the thermalized anharmonic chains, while the superdiffusion of energy occurs in the thermalized chains with only anomalous heat transport." @default.
- W2510597551 created "2016-09-16" @default.
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- W2510597551 date "2016-10-01" @default.
- W2510597551 modified "2023-09-23" @default.
- W2510597551 title "Confining interparticle potential makes both heat transport and energy diffusion anomalous in one-dimensional phononic systems" @default.
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- W2510597551 doi "https://doi.org/10.1016/j.physleta.2016.08.040" @default.
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