# BCS-universal ratios within the Van Hove scenario

@article{Baquero1996BCSuniversalRW, title={BCS-universal ratios within the Van Hove scenario}, author={R. Baquero and David Quesada and Carlos Trallero-Giner}, journal={Physica C-superconductivity and Its Applications}, year={1996}, volume={271}, pages={122-126} }

Abstract The central result of BSC theory is the Universal Ratios which do not depend on physical parameters of the particular superconductor under study. Several attempts have been made to introduce the Van Hove Scenario within BCS theory. We present here a formulation that allow us to obtain Universal Ratios independent of any parameters and therefore a precise definition of “deviation from BCS theory”. This concept is at the basis of several applications of BCS theory in characterizing…

## 11 Citations

A Model with a Singular Electronic Density of States and Some Properties of High‐Temperature Superconductors

- Physics
- 2000

The influence of singularities in the electronic density of states (DOS) on high-temperature superconductors is studied in the framework of the conventional BCS theory. By using a DOS with…

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We evaluate some thermodynamic quantities and characteristic ratios that describe low- and high-temperature s-wave superconducting systems. Based on a set of fundamental equations derived within the…

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The simple analytical model presented in the paper may turn out to be helpful in searching for novel superconducting components with higher critical temperatures induced by pressure effects.

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- Chemistry, Physics
- 2003

It is proven that there exist some universal relations between the energy gap and the differences of the thermodynamic potential, entropy, specific heat and critical magnetic field for many two- and…

The Form and Properties of the Tight-Binding Density of States in Two Dimensions. Possible Application to Superconductivity

- Physics
- 2002

The form of the density of states for a tight-binding model with the first and the next-nearest neighbour hoppings for a rectangular planar lattice and a shift of the chemical potential are…

On Possibility of Realization of d- or p-Wave Symmetry States in Anisotropic Superconductors

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We consider a model of high-Tc superconductors with an anisotropic boson-mediated pairing mechanism corresponding to the nearest-neighbor interactions, and the one-particle dispersion relation…

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- Physics
- 2003

Competition mechanism between singlet and triplet superconductivity in the
tight-binding model with anisotropic attractive potential

- Physics
- 2006

Abstract.
Based upon the tight-binding formalism a model of a
high-Tc superconductor with isotropic and anisotropic
attractive interactions is considered analytically. Symmetry
facets of the group…

New classes of integrals inherent in the mathematical structure of extended equations describing superconducting systems

- Physics
- 2015

In this paper, we discuss the mathematical structure of the s-wave superconducting gap and other quantitative characteristics of superconducting systems. In particular, we evaluate and discuss…

Islands of stability of the d-wave order parameter in s-wave anisotropic superconductors

- Physics
- 2008

Abstract.In this paper we find and present on diagrams in the coordinates of η=2t1/t0 (the ratio of the second and the first nearest
neighbor hopping integrals) and n (the carrier concentration) the…

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