Work

Some global properties of the attractive Hubbard model in the superconducting phase: theT-matrix approximation in two dimensions

Year: 1997

Type: article

Abstract: We have applied the fast Fourier transform, which allows one to compute efficiently convolution sums, to solve the set of self-consistent T-matrix equations to get the Green function of the two-dimensional attractive-U Hubbard model below , extending previous calculations by the same authors. Using a constant order parameter , we calculated as a function of the electron density and interaction strength U. These global results deviate from the BCS behaviour remarkably.

Source: Journal of Physics Condensed Matter

DOI: 10.1088/0953-8984/9/9/001

Authors: S Schafroth, J J Rodríguez-Núñez, H Beck

Institutions: University of Zurich, Universidade Federal Fluminense, University of Neuchâtel

Language: English

Topic: Physics of Superconductivity and Magnetism

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: National Science Foundation, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Conselho Nacional de Desenvolvimento Científico e Tecnológico

OpenAlex ID: W2063083323

FWCI: 0.473

Cites: 22

Cited by: 7

Related to: 10