Similarity and contrasts between thermodynamic properties at the critical point of liquid alkali metals and of electron-hole droplets

2002/08/30 by F. E. Leys, Frederik Leys, N. H. March +3
Earth and Planetary Sciences · Engineering · Physics and Astronomy · #High-pressure geophysics and materials #Phase Equilibria and Thermodynamics #Quantum, superfluid, helium dynamics #cond-mat.soft

paper · pdf · doi:10.1103/physrevb.66.073314

published as Phys. Rev. B 66 (2002) 073314

openalex publication_date 2002/08/30 · arxiv created 2004/05/06 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The recent experimental study by means of time-resolved luminescence measurements of an electron-hole liquid (EHL) in diamond by Shimano et al. [Phys. Rev. Lett. 88, 057404 (2002)] prompts us to compare and contrast critical temperature T_c and critical density n_c relations in liquid alkali metals with those in electron-hole liquids. The conclusion drawn is that these systems have similarities with regard to critical properties. In both cases the critical temperature is related to the cube root of the critical density. The existence of this relation is traced to Coulomb interactions and to systematic trends in the dielectric constant of the electron-hole systems. Finally a brief comparison between the alkalis and EHL's of the critical values for the compressibility ratio Z_c is also given.

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