Physics – Condensed Matter – Superconductivity
Scientific paper
2001-05-09
Physics
Condensed Matter
Superconductivity
4 pages, 5 eps figures
Scientific paper
10.1103/PhysRevB.65.052503
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.
Janko Boldizsar
Moca Catalin Pascu
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