Structural Studies on the Metal-Nonmetal Transition in Expanded Fluid Mercury.

Medium-range fluctuations accompanying the metal-nonmetal transition in expanded fluid hg.

We have carried out small angle x-ray scattering experiments of expanded fluid Hg in the metal-nonmetal (M-NM) transition region around 9.0 g cm(-3). Increase of small angle scattering intensity following the Ornstein-Zernike equation is clearly observed in the M-NM transition region as well as near the liquid-vapor critical point at 5.8 g cm(-3). The short-range correlation length, R, becomes ...

Quantum molecular dynamics simulations for the nonmetal-to-metal transition in fluid helium.

We have performed quantum molecular dynamics simulations for dense helium to study the nonmetal-to-metal transition at high pressures. We present new results for the equation of state and the Hugoniot curve in the warm dense matter region. The optical conductivity is calculated via the Kubo-Greenwood formula from which the dc conductivity is derived. The nonmetal-to-metal transition is identifi...

A ug 2 00 7 Nature of the metal - nonmetal transition in metal - ammonia solutions . I .

Gennady N. Chuev, Pascal Quémerais, and Jason Crain (1) Institute of Theoretical and Experimental Biophysics, Russian Academy of Science, Pushchino, Moscow Region, 142290, Russia (2)Institut Néel, CNRS, BP 166, 38042 Grenoble Cedex 9, France (3) School of Physics, The University of Edinburgh, Mayfield Road, Edinburgh EH9 3JZ, United Kingdom (4) National Physical Laboratory, Hampton Road, Teddin...

The influence of both coordination number and lattice constant on the nonmetal to metal transition

The Metal-insulator Transition in the Expanded Metals

The Landau theory of phase transition is extended to include the singular free-energy due to a metal-insulator (MI) transition and to discuss the condensation caused by this. Some relation is pointed out between the behaviours in T > Tc and those in T < Tc. One sees what type of singularity the idealized model of the electron system is desired to derive in order to explain the experimental fact...