Spatio-temporal correlations in Wigner molecules

Biswarup Ash; J. Chakrabarti; Amit Ghosal

doi:10.1209/0295-5075/114/46001

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arXiv · 1505.03683

Spatio-temporal correlations in Wigner molecules

Biswarup Ash·J. Chakrabarti·Amit Ghosal

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Abstract

The dynamical response of Coulomb-interacting particles in nano-clusters are analyzed at different temperatures characterizing their solid- and liquid-like behavior. Depending on the trap-symmetry, both the spatial and temporal correlations undergo slow, stretched exponential relaxations at long times, arising from spatially correlated motion in string-like paths. Our results indicate that the distinction between the `solid' and `liquid' is soft: While particles in a `solid' flow producing dynamic heterogeneities, motion in `liquid' yields unusually long tail in the distribution of particle-displacements. A phenomenological model captures much of the subtleties of our numerical simulations.

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BibTeX RIS

Biswarup Ash, J. Chakrabarti, Amit Ghosal. 2015-05-14. Spatio-temporal correlations in Wigner molecules. https://doi.org/10.1209/0295-5075%2F114%2F46001

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