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Temperature dependence of normalized conductance for bulk (squares) and ultrathin SWNTs (open circle). Inset: vs plot showing the linear fits.
(a) Electroconductance vs electric-field for bulk and ultrathin SWNTs at 4.2 K. Inset shows a schematic diagram for hopping in high electric-fields; (b) Field-scaling function vs at 4.2 K, for bulk and ultrathin SWNTs. Solid line is linear fit to Eq. (1).
(a) Magnetoresistance vs electric-field in ultrathin SWNTs at , (open circle) and , (squares). (b) Magnetoresistance vs in log-log scale. The power-law dependence region [Eq. (3)] is indicated by the dashed line. Solid line is guide to the eye.
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