Accession Number : AD0676299

Title :   RELATIVISTIC BAND STRUCTURE OF GETE, SNTE, PBTE, PBSE AND PBS,

Corporate Author : LOCKHEED MISSILES AND SPACE CO PALO ALTO CALIF LOCKHEED PALO ALTO RESEARCH LAB

Personal Author(s) : Herman,Frank ; Kortum,Richard L. ; Ortenburger,Irene B. ; Van Dyke,John P.

Report Date : 1968

Pagination or Media Count : 47

Abstract : Relativistic OPW band calculations have been carried out at key points in the reduced zone for several IV-VI compounds. The band structure in the remainder of the zone has been filled in with the aid of an interpolation scheme. To our knowledge, these are the first fully relativistic first-principles band calculations for IV-VI compounds (in contrast to non-relativistic calculations supplemented by relativistic and spin-orbit coupling corrections). Our first-principles band calculations lead to physically realistic energy band models which are sufficiently accurate to account for most of the characteristic features of the experimental reflectivity spectra. It is difficult to interpret the electroreflectivity spectra unambiguously in terms of these band models but a number of plausible spectral assignments can be made. Refined energy band and optical spectrum calculations are in progress and will be reported elsewhere. (Author)

Descriptors :   (*SEMICONDUCTORS, *BAND THEORY OF SOLIDS), GERMANIUM COMPOUNDS, TIN COMPOUNDS, LEAD COMPOUNDS, TELLURIDES, SELENIDES, SULFIDES, RELATIVITY THEORY, WAVE FUNCTIONS, REFLECTIVITY, CRYSTAL STRUCTURE, PERTURBATION THEORY

Subject Categories : Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE