Conductivity of C60 fullerene crystals under dynamic compression up to 200 kbar |
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| Authors: | Yu. A. Osip’yan V. E. Fortov K. L. Kagan V. V. Kveder V. I. Kulakov A. N. Kur’yanchik R. K. Nikolaev V. I. Postnov N. S. Sidorov |
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| Affiliation: | (1) Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, 142432, Russia;(2) Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, 142432, Russia |
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| Abstract: | The conductivity σ of C60 fullerene crystals is measured under quasi-isentropic loading by a spread shock wave to a pressure of 200 kbar at the initial temperatures 293 and 77 K. A sharp increase in σ by seven to eight orders of magnitude is detected: from 10?6?10?7 Ω?1 cm?1 at normal conditions to 5 Ω?1 cm?1 under pressure from 100 to 200 kbar. The conductivity of samples under pressure decreases with decreasing temperature, which is characteristic of semiconductors. On pressure release, σ regains its initial value. |
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