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We have performed an ab initio molecular-dynamics simulation of liquid Ga at high temperature (1000 K). Our results are in good agreement with scattering data and with Knight-shift experiments. A remarkable feature of our findings is the coexistence in the liquid state of metallic and covalent characters. Covalency manifests itself in the appearance of very short-lived Ga-Ga bonds, which represent remnants in the liquid of the crystalline form α-Ga. We set up a two-fluid scheme which can be used for the analysis of fluids where metallic and covalent characters coexist.
Gong et al. (Mon,) studied this question.