Doping dependence of thermodynamic properties in cuprate superconductors

Details Doping dependence of thermodynamic properties in cuprate superconductors Doping dependence of thermodynamic properties in cuprate superconductors

2011-11-28

arxiv.org/abs/1111.6426v2

Physica C 478, 49 (2012)

Physics

Condensed Matter

Superconductivity

8 pages, 7 figures, typos corrected and added reference, accepted for publication in Physica C

Scientific paper

10.1016/j.physc.2012.03.050

The doping and temperature dependence of the thermodynamic properties in cuprate superconductors is studied based on the kinetic energy driven superconducting mechanism. By considering the interplay between the superconducting gap and normal-state pseudogap, the some main features of the doping and temperature dependence of the specific-heat, the condensation energy, and the upper critical field are well reproduced. In particular, it is shown that in analogy to the domelike shape of the doping dependence of the superconducting transition temperature, the maximal upper critical field occurs around the optimal doping, and then decreases in both underdoped and overdoped regimes. Our results also show that the humplike anomaly of the specific-heat near superconducting transition temperature in the underdoped regime can be attributed to the emergence of the normal-state pseudogap in cuprate superconductors.

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