Dispersiones electrón-hueco en superconductividad

• Main Authors: Virgilio Niño, William Herrera
• Format: Article
• Language: English
• Published: Universidad Nacional de Colombia 2002-01-01
• Series: Momento
• Subjects: superconductividad; sistemas inhomogéneos; dispersión de cuasipartículas; ecuaciones Bogoliubov de Genes; teorema de Ehrenfest; electrón-hueco; Cooper; Scheriffer; teoría BCS
• Online Access: https://revistas.unal.edu.co/index.php/momento/article/view/47434

In this paper we make a review of some basic aspects of the microscopic theory of superconductivity for inhomogeneous systems through the Bogoliubov-de Gennes equations which describe the quasiparticles in a superconductor. We show the different scattering processes which occur in a superconductor due to inhomogeneities of the pair potential. These scattering processes appear explicitly in heterostructures and in contacts between metals in the normal state and superconductors. By using a method similar to the Ehrenfest theorern we find the forces which act on  the quasiparticles due to the electron-hole and hole-electron scattering which can occur in the above mentioned structures.