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Soliton states in a chain with two atoms per elementary cell
Author(s) -
Brizhik L. S.,
Eremko A. A.
Publication year - 1991
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.2221640221
Subject(s) - delocalized electron , soliton , atom (system on chip) , electron , physics , atomic physics , conduction band , condensed matter physics , superconductivity , thermal conduction , electron hole , valence (chemistry) , chain (unit) , valence band , chemistry , quantum mechanics , nonlinear system , computer science , embedded system
The autolocalization of carriers in a chain with two atoms per elementary cell is investigated. It is shown that in the case of big differences of neighbouring atom masses the hole in the valence band corresponds to a soliton and the electron in the conduction band is in a delocalized state, if the atom with bigger mass has the higher energetic term. In the opposite case a soliton can be formed by an electron in the conduction band. The bisoliton mechanism of superconductivity is provided by hole carriers in the first case, and electron carriers in the last one.