M. V. Kondrin, V. V. Brazhkin, A. A. Pronin, A. G. Lyapin, A. V. Sidorov, V. I. Bugakov, S. V. Popova, V. L. Solozhenko, “Electro-and magnetotransport properties of disordered carbon phases synthesized from C60 fullerite at moderate pressures P syn < 1.5 GPa”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2008, Volume 88, Issue 1,Pages 59

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Electro-and magnetotransport properties of disordered carbon phases synthesized from C₆₀ fullerite at moderate pressures P _syn < 1.5 GPa

M. V. Kondrin^a, V. V. Brazhkin^a, A. A. Pronin^b, A. G. Lyapin^b, A. V. Sidorov^a, V. I. Bugakov^a, S. V. Popova^a, V. L. Solozhenko^c

^a Institute for High Pressure Physics, Russian Academy of Sciences, Troitsk, Moscow region, 142190, Russia
^b Prokhorov General Physics Institute, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 117942, Russia
^c Institut Galilee, Universite Paris 13, 93430 Villetaneuse, France

Abstract: Charge transport has been investigated in new disordered carbon phases synthesized from C₆₀ at “moderate” pressures P _syn < 1.5 GPa and high temperatures T _syn > 1000 K. Under these synthesis conditions, a structure transition from nanographite phases to new amorphous modifications is induced when pressure decreases. The transition from hopping transport to diffusive electron transport typical of “dirty” metals is observed in a number of samples synthesized at various pressures and temperatures in the indicated ranges. The magnetotransport properties of these phases under intermediate synthesis conditions can be described by diffusive electron transport.

PACS: 72.15.Gd, 81.05.Gc, 81.05.Uw, 81.05.Tp

Received: 26.05.2008
Revised: 03.06.2008