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(a) Magnetic field dependence of the magnetoconductivity in the nc-Si:H sample at . (b) Low magnetic field magnetoconductivity of the nc-Si:H sample at different temperatures. Solid curves are the DFS fittings of the experimental data (open squares).
(a) Temperature dependence of dephasing lengths extracted from the DFS fitting process (open squares). The solid curve represents an exponential fit which yields a temperature exponent of , differing from the result of according to 3D scaling theory (dashed curve). (b) Temperature dependence of magnetoconductivity under low magnetic fields . The experimental data (open squares) are fitted by a combined model of 2D and 3D scaling theories (solid curves), giving a temperature index .
Magnetoconductivity under very low magnetic fields at temperatures of (a) , (b) , and (c) . Dashed curves represent the DFS calculations that deviate from the experimental data (open squares), in contrast to the modified results by a combination of the DFS theory and 3D correction from the scaling theory (solid curves).
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