title: Polarization of ions under geometric confinement in the strong-interacting regime: a two-ring model study.
abstract: We study the polarization and electrostatic interactions of an ionic system under geometric confinement in the strong-interacting regime. The geometric confinement is introduced via a simple two-ring model, where ions of each species are confined on a ring, respectively. The observed polarization curve exhibits staircase transitions in the low-temperature regime, due to the crossover between energy local minima. We examine the criterion for the validity of the linear response theory and introduce a simple two-state picture that illustrates the signatures of the crossover phenomena.
authors.affiliation: Department of Physics, National Taiwan Normal University, Taipei 11677, Taiwan.
authors.forename: Yiing-Rei
authors.initials: YR
authors.lastname: Chen
authors.forename: Sio-Kit
authors.initials: SK
authors.lastname: Ng
authors.forename: Chi-Lun
authors.initials: CL
authors.lastname: Lee