Local Density of States for One Dimensional Aperiodic Binary Sequences Using Local Green's Function Method [microform]

Résumé du livre

The goal of this thesis was to examine what the effect of aperiodic sequencing in binary alloys would have on the electronic density of states. Our method of evaluation is the local green's function (LGF) method which we justify as being a reasonable compromise between accuracy and computational practicality. This method gives us the local density of states (LDOS) which we evaluate at the surface. From the LDOS we can infer the structure of the density of states (DOS). The well known cases of pure materials and periodic binary alloys are examined in order to clearly illustrate the advantages and limitations of our tool. We have proposed a new tool to simplify the evaluation of the LDOS for the Fibonacci sequence that enables us to compute extremely large systems with a high degree of speed and accuracy.