Specific heat across the superconducting dome in the cuprates
A. J. H. Borne, J. P. Carbotte, E. J. Nicol
DOI 10.1103/PhysRevB.82.094523 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
The specific heat of the superconducting cuprates is calculated over the entire phase diagram. A d-wave BCS approach based on the large Fermi surface of Fermi liquid and band-structure theory provides a good description of the overdoped region. At underdoping it is essential to include the emergence of a second energy scale, the pseudogap and its associated Gutzwiller factor, which accounts for a reduction in the coherent piece of the electronic Green’s function due to increased correlations as the Mott insulating state is approached. In agreement with experiment, we find that the slope of the linear in T dependence of the low-temperature specific heat rapidly increases above optimum doping while it is nearly constant below optimum. Our theoretical calculations also agree with recent data on Bi2Sr2−xLaxCuO6+δ for which the normal state is accessed through the application of a large magnetic field. A quantum critical point is located at a doping slightly below optimum.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2-xLaxCuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 30 | Pressure not reported | unknown |
Similar papers
Normal state specific heat in the cuprate superconductors La2−xSrxCuO4 and Bi2+ySr2−x−yLaxCuO6+δ near the critical point of the pseudogap phase
similarity 0.94C. Girod et al.
Source status unknown — claims are unverified
Specific-heat measurements on superconducting bi-ca-sr-cu and tl-ca-ba-cu oxides: absence of a linear term in the specific heat of bi-ca-sr-cu oxides
similarity 0.93R. A. Fisher et al.
Source status unknown — claims are unverified
Dome structure in pressure dependence of superconducting transition temperature for HgBa2Ca2Cu3O8: Studies by ab initio low-energy effective Hamiltonian
similarity 0.92Jean-Baptiste Morée et al.
Source status unknown — claims are unverified
Transport signatures of the pseudogap critical point in the cuprate superconductor Bi2Sr2−xLaxCuO6+δ
similarity 0.92M. Lizaire et al.
Source status unknown — claims are unverified
Superconducting correlations induced by charge ordering in cuprate superconductors and Fermi-arc formation
similarity 0.92E. V. L. de Mello & J. E. Sonier
Source status unknown — claims are unverified
X-ray diffuse scattering experiments from bismuth-based high-Tc superconductors
similarity 0.92M. Izquierdo et al.
Source status unknown — claims are unverified