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Electron pairing in one‐dimensional anharmonic crystal lattices
Author(s) -
Velarde M. G.,
Brizhik L.,
Chetverikov A. P.,
Cruzeiro L.,
Ebeling W.,
Röpke G.
Publication year - 2011
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.23008
Subject(s) - anharmonicity , pairing , electron , physics , singlet state , condensed matter physics , lattice (music) , coulomb , electron pair , bound state , quantum , quantum mechanics , superconductivity , excited state , acoustics
We show that when anharmonicity is added to the electron–phonon interaction it facilitates electron pairing in a localized state. Such localized state appears as singlet state of two electrons bound with the traveling local lattice soliton distortion, which survives when Coulomb repulsion is included. © 2011 Wiley Periodicals, Inc. Int J Quantum Chem, 2012