Diamond: Molten under pressure

  title={Diamond: Molten under pressure},
  author={Isaac F. Silvera},
  journal={Nature Physics},
  • I. Silvera
  • Published 2010
  • Physics, Geology
  • Nature Physics
Shockwaves driven by intense laser pulses allow the phase diagram of diamond to be extended up to pressures of 40 megabars and temperatures of 50,000 K. The results could help us better understand the material properties of the core of giant planets within and beyond our Solar System. 

Liquid Metallic Hydrogen: Building Block of a Liquid Sun

Liquid metallic hydrogen provides a compelling material for constructing a condensed matter model of the Sun and the photosphere. Like diamond, metallic hydrogen might have the potential to be a

The mechanical and strength properties of diamond

  • J. Field
  • Geology
    Reports on progress in physics. Physical Society
  • 2012
Two other groups of materials based on carbon, namely the fullerenes and graphines have been identified in recent years and are now the subject of intense research.



Shock-Wave Exploration of the High-Pressure Phases of Carbon

This work provides evidence for the existence of a diamond-bc8-liquid triple point on the melt boundary by conducting shock-wave experiments on carbon using a magnetically driven flyer-plate technique that enable quantitative comparison with theory.

Melting temperature of diamond at ultrahigh pressure

Measurements of the melting point of diamond at pressures of around 10 million atm suggest it could be present in crystalline form in the interiors of giant planets. At even higher pressures and

Carbon phase diagram from ab initio molecular dynamics.

We compute the free energy of solid and liquid diamond from first-principles electronic structure theory using efficient thermodynamic integration techniques. Our calculated melting curve is in

Carbon under extreme conditions: Phase boundaries and electronic properties from first-principles theory

The results show that hot, compressed diamond is a semiconductor that undergoes metalization upon melting, and in the stability range of BC8, an insulator to metal transition is likely to occur in the solid phase, providing constraints on the carbon equation of state.