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Cluster approximations in alloys
Author(s) -
Mertsching J.
Publication year - 1973
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.2220590121
Subject(s) - cluster (spacecraft) , approximations of π , statistical physics , mathematics , physics , computer science , programming language
Several cluster approximations in alloys are discussed and numerically studied for the one‐dimensional tight‐binding model. The approximations are compared, and some interrelations are found to exist. The shortcomings of the cluster approximations such as broadening, shifting, and diminishing of various cluster bands are exhibited.