Pseudo-Quantum Criticality in Electron Liquids Exhibited in Expanded Alkali Metals

Details Pseudo-Quantum Criticality in Electron Liquids Exhibited in Expanded Alkali Metals Pseudo-Quantum Criticality in Electron Liquids Exhibited in Expanded Alkali Metals

2007-06-27

arxiv.org/abs/0706.4001v1

Physics

Condensed Matter

Other Condensed Matter

4 pages, 4 figures

Scientific paper

With paying special attention to the divergence in the compressibility $\kappa$, we study the Coulombic screening in alkali metals to find singular long-range fluctuations in the electronic polarization originating from this divergence. As a consequence of this singularity, we predict the decrease of the equilibration distance between ions against the increase of $r_s$ the Wigner-Seitz radius of valence electrons, provided that the condition of $2r_c < r_s < 4r_c$ is satisfied with $r_c$ the ion-core radius. This prediction is in good quantitative agreement with the recent experiment on liquid Rb.

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