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Two‐ and Three‐Body Interactions and Phonons in Some F.C.C. Metals
Author(s) -
Singh G.,
Rathore R. P. S.
Publication year - 1986
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221360106
Subject(s) - phonon , lanthanum , strontium , ytterbium , dispersion (optics) , matrix (chemical analysis) , morse potential , metal , materials science , condensed matter physics , chemistry , physics , atomic physics , inorganic chemistry , quantum mechanics , metallurgy , doping , composite material , organic chemistry
Two‐ and three‐body interactions in f.c.c. metals are derived from the general Morse potential. These interactions are employed to develope the dynamical matrix, which involves only three force constants. The dispersion curves for the f.c.c. metals like calcium, strontium, ytterbium, and lanthanum are derived from the elements of the matrix so developed. The predictions show good agreement with the recently measured phonon dispersion in the said metals.