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Disordered hyperuniformity in two-component nonadditive hard-disk plasmas

Author(s): Lomba, Enrique; Weis, Jean-Jacques; Torquato, Salvatore

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Abstract: © 2017 American Physical Society. We study the behavior of a classical two-component ionic plasma made up of nonadditive hard disks with additional logarithmic Coulomb interactions between them. Due to the Coulomb repulsion, long-wavelength total density fluctuations are suppressed and the system is globally hyperuniform. Short-range volume effects lead to phase separation or to heterocoordination for positive or negative nonadditivities, respectively. These effects compete with the hidden long-range order imposed by hyperuniformity. As a result, the critical behavior of the mixture is modified, with long-wavelength concentration fluctuations partially damped when the system is charged. It is also shown that the decrease of configurational entropy due to hyperuniformity originates from contributions beyond the two-particle level. Finally, despite global hyperuniformity, we show that in our system the spatial configuration associated with each component separately is not hyperuniform, i.e., the system is not "multihyperuniform".
Publication Date: 18-Dec-2017
Citation: Lomba, E, Weis, JJ, Torquato, S. (2017). Disordered hyperuniformity in two-component nonadditive hard-disk plasmas. Physical Review E, 96 (6), 10.1103/PhysRevE.96.062126
DOI: doi:10.1103/PhysRevE.96.062126
ISSN: 2470-0045
EISSN: 2470-0053
Pages: 062126-1 - 062126-11
Type of Material: Journal Article
Journal/Proceeding Title: Physical Review E
Version: Final published version. Article is made available in OAR by the publisher's permission or policy.

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