期刊
EUROPHYSICS LETTERS
卷 57, 期 2, 页码 281-287出版社
EDP SCIENCES S A
DOI: 10.1209/epl/i2002-00573-x
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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 do resistivity of the liquid (2 mOmega cm) is in agreement with theoretical predictions (2.5 mOmega cm) for the equilibrium low-density phase.
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