High Pressure Insulator-Metal Transition in Molecular Fluid Oxygen

Details High Pressure Insulator-Metal Transition in Molecular Fluid Oxygen High Pressure Insulator-Metal Transition in Molecular Fluid Oxygen

2000-12-15

arxiv.org/abs/cond-mat/0012295v2

Phys. Rev. Lett. 86, 3108 (2001)

Physics

Condensed Matter

RevTeX, 4 figures

Scientific paper

10.1103/PhysRevLett.86.3108

We report the first experimental evidence for a metallic phase in fluid molecular oxygen. Our electrical conductivity measurements of fluid oxygen under dynamic quasi-isentropic compression show that a non-metal/metal transition occurs at 3.4 fold compression, 4500 K and 1.2 Mbar. We discuss the main features of the electrical conductivity dependence on density and temperature and give an interpretation of the nature of the electrical transport mechanisms in fluid oxygen at these extreme conditions.

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