Figure 4
(a) Relative magnetoresistance at different temperatures. A negative magnetoresistance is seen at low fields and low temperatures but disappears as the temperature increases. (b) Fit of the low field negative magnetoresistance at low temperatures to a parabolic dependence on magnetic field. The inset shows the variation of the parameter (S(T))−1 obtained from the fit showing a parabolic dependence for (S(T))−1 with temperature.
