Low-Temperature Specific Heat of a One-Dimensional System: K2Pt(CN)4Br0.3·3(H2O)

Abstract
Measurements of the specific heat of K2Pt(CN)4 Br0.3·3(H2O) between 0.059 and 40 K reveal three unexpected features: (1) a contribution linear in temperature above ∼0.15 K, (2) a sharp decrease in this linear contribution below ∼0.15 K, and (3) a marked dependence upon the state of hydration of the sample above 6 K.