Open AccessSuperconductivity in tight-binding approximation
Author(s) -
S. J. Poon
Publication year - 1975
Language(s) - English
Resource type - Reports
DOI - 10.2172/4104318
Subject(s) - superconductivity , tight binding , condensed matter physics , physics , atom (system on chip) , binding energy , lattice (music) , electron , ion , quantum mechanics , electronic structure , computer science , acoustics , embedded system
An interpretation of Barisic's relation for transition elements between the d-electron contribution to the cohesive energy and the local atomic parameter eta is presented. This relation is extended to a lattice with more than one atom per unit cell in the tight- binding approximation of rigid ions. It is conjectured that Barisic's relation is correct to first order approximation for transition metal alloys, provided the phonon induced d-d coupling is the dominant mechanism for superconductivity. (auth