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Structure and Bonding in Cubic IV‐VI Crystals VII. On the Influence of Defects on the Stability of the Cubic Structure
Author(s) -
Enders P.
Publication year - 1985
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.2221300214
Subject(s) - cubic crystal system , ionic bonding , condensed matter physics , instability , phase (matter) , charge density wave , coherence (philosophical gambling strategy) , diatomic molecule , phase transition , simple (philosophy) , charge (physics) , materials science , physics , quantum mechanics , ion , molecule , superconductivity , philosophy , epistemology
The influence of defects (vacancies) on the phase transition is qualitatively treated within the framework of simple one‐dimensional models. Generalizing Gömez‐Santos' and Ynduráin's treatment to a diatomic chain, their stabilizing the cubic phase rôle can be explained as destroying the coherence of the electronic charge density wave driving the Peierls instability. The degree of coherence destroying necessary to suppress the phase transition can be quite small due to the extrinsic Peierls gap (ionic energy).