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Peierls‐ and Mott‐type instabilities in one‐dimensional chains—coexistence or contradiction
Author(s) -
Kventsel G. F.
Publication year - 1982
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.560220412
Subject(s) - mott insulator , condensed matter physics , hamiltonian (control theory) , instability , mott transition , physics , metal–insulator transition , type (biology) , hubbard model , quantum mechanics , mathematics , superconductivity , mathematical optimization , electrical resistivity and conductivity , ecology , biology
Two possible effects—Peierls instability (bond alternation) and Mott‐type correlation spin ordering—leading to metal–insulator transition (energy gap formation) in one–dimensional chains, have been considered using UHF treatment of the Hubbard‐type Hamiltonian. It has been found that in the framework of approximations applied these two instabilities are mutually exclusive.