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Antiadiabatic Theory of Superconducting State Transition : Phonons and Strong Electron Correlations—The Old Physics and New Aspects
Author
Source
Advances in Condensed Matter Physics
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-36, 36 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2009-12-24
Country of Publication
Egypt
No. of Pages
36
Main Subjects
Abstract EN
Complex electronic ground state of molecular and solid state system is analyzed on the ab initio level beyond the adiabatic Born-Oppenheimer approximation (BOA).
The attention is focused on the band structure fluctuation (BSF) at Fermi level, which is induced by electron-phonon coupling in superconductors, and which is absent in the non-superconducting analogues.
The BSF in superconductors results in breakdown of the adiabatic BOA.
At these circumstances, chemical potential is substantially reduced and system is stabilized (effect of nuclear dynamics) in the antiadiabatic state at broken symmetry with a gap(s) in one-particle spectrum.
Distorted nuclear structure has fluxional character and geometric degeneracy of the antiadiabatic ground state enables formation of mobile bipolarons in real space.
It has been shown that an effective attractive e-e interaction (Cooper-pair formation) is in fact correction to electron correlation energy at transition from adiabatic into antiadiabatic ground electronic state.
In this respect, Cooper-pair formation is not the primary reason for transition into superconducting state, but it is a consequence of antiadiabatic state formation.
It has been shown that thermodynamic properties of system in antiadiabatic state correspond to thermodynamics of superconducting state.
Illustrative application of the theory for different types of superconductors is presented.
American Psychological Association (APA)
Baňacký, Pavol. 2009. Antiadiabatic Theory of Superconducting State Transition : Phonons and Strong Electron Correlations—The Old Physics and New Aspects. Advances in Condensed Matter Physics،Vol. 2010, no. 2010, pp.1-36.
https://search.emarefa.net/detail/BIM-496003
Modern Language Association (MLA)
Baňacký, Pavol. Antiadiabatic Theory of Superconducting State Transition : Phonons and Strong Electron Correlations—The Old Physics and New Aspects. Advances in Condensed Matter Physics No. 2010 (2010), pp.1-36.
https://search.emarefa.net/detail/BIM-496003
American Medical Association (AMA)
Baňacký, Pavol. Antiadiabatic Theory of Superconducting State Transition : Phonons and Strong Electron Correlations—The Old Physics and New Aspects. Advances in Condensed Matter Physics. 2009. Vol. 2010, no. 2010, pp.1-36.
https://search.emarefa.net/detail/BIM-496003
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-496003