2025/12/05 by Bachurin, Dmitry Vladimirovich, Murzaev, Ramil Tuhfatovich
Engineering · Physics and Astronomy · #FOS: Physical sciences #Nonlinear Photonic Systems #Physical sciences #Plasmonic and Surface Plasmon Research #Quantum Mechanics and Non-Hermitian Physics
paper · doi:10.48612/letters/2025-4-383-387
openalex publication_date 2025/12/05 · openalex created_date 2025/12/06 · openalex updated_date 2026/07/01
For the first time, molecular dynamics simulations have been employed to investigate energy transfer in a three-dimensional fcc nickel lattice driven harmonically through a pair of neighboring atoms at frequencies lying outside the phonon spectrum. The dependence of the critical driving frequency on the driving amplitude was determined. When the driving frequency is below this threshold, energy is efficiently transmitted from the driven atoms into the lattice, leading to the spontaneous generation and emission of discrete breathers propagating in opposite directions along close-packed atomic rows. In contrast, when the driving frequency exceeds the critical value, energy transfer to the lattice ceases and the supratransmission effect is not observed. These findings provide new insights into nonlinear energy transport mechanisms in crystalline solids and the conditions necessary for the excitation of discrete breathers in three-dimensional metallic lattices.