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DOE OSTI · 22925025

Dynamics of a Three-Component Delocalized Nonlinear Vibrational Mode in Graphene

Shcherbinin, S. A.·Semenova, M. N.·Semenov, A. S.·Korznikova, E. A.·Chechin, G. M.
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Abstract

The dynamics of a three-component nonlinear delocalized vibrational mode in graphene is studied with molecular dynamics. This mode, being a superposition of a root and two one-component modes, is an exact and symmetrically determined solution of nonlinear equations of motion of carbon atoms. The dependences of a frequency, energy per atom, and average stresses over a period that appeared in graphene are calculated as a function of amplitude of a root mode. We showed that the vibrations become periodic with certain amplitudes of three component modes, and the vibrations of one-component modes are close to periodic one and have a frequency twice the frequency of a root mode, which is noticeably higher than the upper boundary of a spectrum of low-amplitude vibrations of a graphene lattice. The data obtained expand our understanding of nonlinear vibrations of graphene lattice.

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75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITYEQUATIONS OF MOTIONGRAPHENEHARMONIC GENERATIONMATHEMATICAL SOLUTIONSMOLECULAR DYNAMICS METHODNONLINEAR PROBLEMSPERIODICITYSPECTRASTRESSESVIBRATIONAL STATES

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Shcherbinin, S. A., Semenova, M. N., Semenov, A. S., Korznikova, E. A., Chechin, G. M.. 2019-11-15. Dynamics of a Three-Component Delocalized Nonlinear Vibrational Mode in Graphene. https://doi.org/10.1134/s1063783419110313

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