Very-low temperature specific heat of Torlon

摘要

The specific heat of Torlon has been measured in the 0.15-4.2K temperature range. Data below 1 K can be represented by c(T) = P_1T~(1+delta) + P_2T~3, with Pt = (5.41 + - 0.08)-10~(-6)J K~(-(2+delta))g~(-1), P_2 = (2.82 + - 0.03) -10~(-5)JK~(-4)g~(-1) and 5 = 0.28 ± 0.01, as predicted by the tunnelling theory. Above 1 K, the behaviour of c(T) is similar to that of other amorphous materials and can be expressed as: c(T) = P- T~(SIGMA) with P = (2.68 + - 0.07)-10~(-5)JK~(SIGMA+1)g~(-1) and AIGMA = 3.32 + - 0.02.