When pairing correlations in a quasi two dimensional electron system induce a pseudogap in the single particle density of states, the specific heat must also contain a sizeable pair contribution. The theoretically calculated specific heat for such a system is compared to the experimental results of Loram and his collaborators for underdoped YBa_2Cu_3O_{6+x} and La_{2-x}Sr_{x}CuO_4 samples. The size and doping dependence of the extracted pseudogap energy scale for both materials is comparable to the values obtained from a variety of other experiments.
@article{arxiv.cond-mat/0105202,
title = {The electronic specific heat in the pairing pseudogap regime},
author = {C. P. Moca and B. Janko},
journal= {arXiv preprint arXiv:cond-mat/0105202},
year = {2009}
}