Accession Number : AD0643866

Title :   ELASTIC SPECTRA OF TWO-DIMENSIONAL DISORDERED LATTICES. II. IMPURITIES WHICH ALTER THE INTERACTIONS.

Descriptive Note : Technical rept.,

Corporate Author : HARVARD UNIV CAMBRIDGE MASS DIV OF ENGINEERING AND APPLIED PHYSICS

Personal Author(s) : Poon,Hin-Chiu ; Bienenstock,Arthur

Report Date : SEP 1966

Pagination or Media Count : 42

Abstract : Previous studies indicated that the virtual crystal approximation should not be valid for the determination of the elastic spectrum of a system of two or more dimensions in which impurities alter the interactions. In this paper, the failure of the virtual crystal approximation for such a system is demonstrated explicitly. In addition, the relationship between the failure of the virtual crystal approximation and the lifetimes of the elastic modes is discussed.

Descriptors :   (*SOLID SOLUTIONS, CRYSTAL LATTICES), (*CRYSTAL LATTICES, ELASTIC PROPERTIES), CRYSTAL DEFECTS, IMPURITIES, APPROXIMATION(MATHEMATICS), VIBRATION, RELAXATION TIME, EQUATIONS OF MOTION

Subject Categories : Crystallography
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE