Thermodynamic Properties of d_{x^2-y^2}+id_{xy} Superconductor

Details Thermodynamic Properties of d_{x^2-y^2}+id_{xy} Superconductor Thermodynamic Properties of d_{x^2-y^2}+id_{xy} Superconductor

2000-02-08

arxiv.org/abs/cond-mat/0002114v1

Physics

Condensed Matter

Superconductivity

To appear in Physica C

Scientific paper

10.1016/S0921-4534(00)00029-0

In view of the current interest in d_{x^{2}-y^{2}}+id_{xy} superconductors some of their thermodynamic properties have been studied to obtain relevant information for experimental verification. The temperature dependence of the specific heat and superfluid density show marked differences in d_{x^{2}-y^{2}}+id_{xy} state compared to the pure d-wave state. A second order phase transition is observed on lowering the temperature into a d_{x^{2}-y^{2}}+id_{xy} state from the d_{x^{2}-y^{2}} state with the opening up of a gap all over the fermi surface. The thermodynamic quantities in d_{x^{2}-y^{2}}+id_{xy} state are dominated by this gap as in an s-wave superconductor as opposed to the algebraic temperature dependence in pure d-wave states coming from the low energy excitations across the node(s).

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