Abstract
Measurements performed at frequencies of 0.1–10 kHz on films of C70 fullerite revealed a negative dielectric permittivity ɛ’<−1000. The largest drop in ɛ′ occurred in the temperature interval 170–270 K and was accompanied by frequency dispersion. The negative sign of the dielectric permittivity and its low-frequency dispersion are accounted for by the Lorentz correction to the local field acting on the conduction electrons. This correction originates from the polarization of the electrons bound to impurity centers.
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Translated from Fizika Tverdogo Tela, Vol. 44, No. 11, 2002, pp. 2101–2105.
Original Russian Text Copyright © 2002 by Makarov, Sherman.
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Makarov, V.V., Sherman, A.B. Low-frequency dispersion of the negative dielectric permittivity in C70 films. Phys. Solid State 44, 2200–2203 (2002). https://doi.org/10.1134/1.1521479
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DOI: https://doi.org/10.1134/1.1521479