Abstract
We report the results of an experimental study of the electronic transport properties (Hall effect and electrical conductivity) of expanded liquid mercury in the density range 13.6-8.5 g ${\mathrm{cm}}^{\ensuremath{-}3}$ (temperature region 10-1500\ifmmode^\circ\else\textdegree\fi{}C and pressure region 1-1900 atm). From the correlation of the Hall coefficient and the conductivity, three distinct conduction regimes were identified in this one-component system: (a) the weak-scattering metallic region (13.6-11 g ${\mathrm{cm}}^{\ensuremath{-}3}$), (b) the strong-scattering metallic region (11.0-9.2 g ${\mathrm{cm}}^{\ensuremath{-}3}$), and (c) the localization regime ( 9.2 g ${\mathrm{cm}}^{\ensuremath{-}3}$). Detailed information has been obtained for the formation of the pseudogap and the metal-nonmetal transition in this disordered system.
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