By using femtosecond laser excitation, non-thermal melting of fullerite has been experimentally achieved. Because the ultrafast, non-thermal transition occurs approximately at constant volume, the density of the resulting liquid is 25% lower than for non-thermally molten graphite. Tight-binding molecular-dynamics simulations indicate the formation of the low-density liquid phase, composed by sp-bonded chains at 7900 K and 7 GPa. The extracted dc resistivity of the liquid (2 mΩ cm) is in agreement with theoretical predictions (2.5 mΩ cm) for the equilibrium low-density phase.
Generation of the low-density liquid phase of carbon by non-thermal melting of fullerite / A. Cavalleri, K. Sokolowski-Tinten, D. von der Linde, I. Spagnolatti, M. Bernasconi, G. Benedek, A. Podestà, P. Milani. - In: EUROPHYSICS LETTERS. - ISSN 0295-5075. - 57:2(2002), pp. 281-287.
Generation of the low-density liquid phase of carbon by non-thermal melting of fullerite
A. PodestàPenultimo
;P. MilaniUltimo
2002
Abstract
By using femtosecond laser excitation, non-thermal melting of fullerite has been experimentally achieved. Because the ultrafast, non-thermal transition occurs approximately at constant volume, the density of the resulting liquid is 25% lower than for non-thermally molten graphite. Tight-binding molecular-dynamics simulations indicate the formation of the low-density liquid phase, composed by sp-bonded chains at 7900 K and 7 GPa. The extracted dc resistivity of the liquid (2 mΩ cm) is in agreement with theoretical predictions (2.5 mΩ cm) for the equilibrium low-density phase.Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.