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We investigate the ground state and finite-temperature equilibrium structures of a classical system consisting of a small number of charged particles under a parabolic confinement in two dimensions (2D). Molecular dynamics (MD) simulations are undertaken to find the equilibrium configurations at different temperatures. To characterize these structures, we compute the radial distribution functions (RDF) and the velocity distribution functions (VDF) for different states at elevated temperatures. Our analysis reveals notable temperature-dependent changes in the RDF and VDF, even in a finite system, which allow us to distinguish between different structural phases. We also present a detailed discussion about the MD simulation and the heating protocol.

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Thermally Induced Structural Transitions in Two-Dimensional Confined Coulomb Systems

  • 会议论文

  • 发表日期：

    2026年

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  • Debjyoti Mishra,
  • Manjeet Seth,
  • Awadhesh Kumar Dubey

摘要

We investigate the ground state and finite-temperature equilibrium structures of a classical system consisting of a small number of charged particles under a parabolic confinement in two dimensions (2D). Molecular dynamics (MD) simulations are undertaken to find the equilibrium configurations at different temperatures. To characterize these structures, we compute the radial distribution functions (RDF) and the velocity distribution functions (VDF) for different states at elevated temperatures. Our analysis reveals notable temperature-dependent changes in the RDF and VDF, even in a finite system, which allow us to distinguish between different structural phases. We also present a detailed discussion about the MD simulation and the heating protocol.