Specific heat of high temperature superconductors: Role of $\mid ψ \mid^{4}$ term in Ginzburg--Landau free energy

Details Specific heat of high temperature superconductors: Role of $\mid ψ \mid^{4}$ term in Ginzburg--Landau free energy Specific heat of high temperature superconductors: Role of $\mid ψ \mid^{4}$ term in Ginzburg--Landau free energy

1996-05-19

arxiv.org/abs/cond-mat/9605118v1

Physics

Condensed Matter

Figures will be available on request. To appear in Physica C

Scientific paper

We have derived the expression for the specific heat by using Ginzburg-Landau
(GL) theory by taking $\mid \psi \mid^{4}$ into account in the Hartree
approximation. Without this term, the specific heat diverges at $T=T_{c}(B)$.
It is also shown that width and shape of the transition depends on the value of
$\alpha$ and $\beta$, the coefficients in the GL free energy.

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