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Static vector solitons in a topological mechanical lattice

Zhou, Yuan ; Zhang, Yafei ; Long, Jiaxin ; Wang, Aoxi ; Chen, Chang Qing

Communications physics, 2024-12, Vol.7 (1), p.131-8 [Periódico revisado por pares]

London: Nature Publishing Group

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  • Título:
    Static vector solitons in a topological mechanical lattice
  • Autor: Zhou, Yuan ; Zhang, Yafei ; Long, Jiaxin ; Wang, Aoxi ; Chen, Chang Qing
  • Assuntos: Boundary conditions ; Broken symmetry ; Data processing ; Electrons ; Information processing ; Lattice vibration ; Lattices ; Mechanical systems ; Mechanics (physics) ; Phase transitions ; Physics ; Solitary waves ; Symmetry ; Topology
  • É parte de: Communications physics, 2024-12, Vol.7 (1), p.131-8
  • Descrição: Topological solitons, renowned for their stability and particle-like collision behaviors, have sparked interest in developing macroscopic-scale information processing devices. However, the exploration of interactions between multiple topological solitons in mechanical systems remains elusive. In this study, we construct a topological mechanical lattice supporting static vector solitons that represent quantized degrees of freedom and can freely propagate across the system. Drawing inspiration from coupled double atomic chains with sublattice symmetry breaking, we design a mechanical analogue featuring topologically protected boundary modes and induce independent modes to finite motions along branched motion pathways. Through a continuum theory, we describe the evolution of boundary modes with vector solitons composed of superposed kink solutions, identifying them as minimum energy pathways on the rugged effective potential surface with multiple degenerate ground states. Our results reveal the connection between transformable topological lattices and multistable systems, providing insight into nonlinear topological mechanics.Topological solitons can be realised in a range of platforms that have the potential for processing topologically protected information. Here, the authors identify a class of vector solitons in a mechanical lattice, showing superposed kinks and invertible polarizations, with implications for nonlinear topological mechanics.
  • Editor: London: Nature Publishing Group
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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