Figure 34.6 temprature heat of normal and conducting aluminum. The normal phase is produced below T, by application of a weak (300-gauss) magnetic tick which d superconducting but has otherwise negligible fect on the specific heat, The Debye temperature is quite high in aluminum. so the specilic hcat is dominated by the clectronic contribution throughout thi range (as can be seen from the fact that the normal-state curve is quite close to be linear). 'The discontinuity at T agrees well with the theo 34.22) ⊥h1」11 Ies-cn/c,=1,43. Well be 1.07 2.0 low T c, drops far belot resting the existence gy gap. (N, E. Phillips, Phys. Rer. 114. 676 1959)