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A Model for Liquid-Striped Liquid Phase Separation in Liquids of Anisotropic Polarons

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Abstract

The phase separation between a striped polaron liquid at the particular density and a high density polaron liquid is described by a modified Van der Waals scheme. The striped polaron liquid represents the pseudo gap matter or Wigner-like polaron phase at 1/8 doping in cuprate superconductors. The model includes the tendency of pseudo-Jahn-Teller polarons to form anisotropic directional bonds at a preferential volume with the formation of different “liquid phases”. The model gives the coexistence of a first low density polaron striped liquid and a second high density liquid that appears in cuprate superconductors for doping larger than 1/8. We discuss how the strength of anisotropic bonds controls the variation the phase separation scenarios for complex systems in the presence of a quantum critical point where the phase separation vanishes.

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Authors and Affiliations

  1. Department of Physics, Sapienza University of Rome, P. Aldo Moro 2, 00185, Rome, Italy

    D. Innocenti, A. Ricci, N. Poccia, M. Fratini & Antonio Bianconi

  2. Istituto di Cristallografia, CNR, Via Salaria Km 29, 300, 00016 Monterotond, Rome, Italy

    G. Campi

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  1. D. Innocenti
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  2. A. Ricci
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  3. N. Poccia
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  4. G. Campi
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  6. Antonio Bianconi
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Correspondence to Antonio Bianconi.

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Innocenti, D., Ricci, A., Poccia, N. et al. A Model for Liquid-Striped Liquid Phase Separation in Liquids of Anisotropic Polarons. J Supercond Nov Magn 22, 529–533 (2009). https://doi.org/10.1007/s10948-009-0474-9

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  • DOI: https://doi.org/10.1007/s10948-009-0474-9

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