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1993 | 84 | 1 | 101-126
Article title

Magnetic Aspects of Superconducting Pairing

Content
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Languages of publication
EN
Abstracts
EN
We discuss some of the recently proposed models dealing with the superconducting state in the presence of strong antiferromagnetic fluctuations, induced by the on-site Coulomb repulsion between electrons (the Hubbard correlation). In the weak coupling limit we treat the influence of correlation effects on the phonon-mediated superconductivity within the BCS-Eliashberg framework. As a non-standard model in this limit we describe next the so-called spin bag model. To discuss strong correlation limit, we describe first the projected Hamiltonian (the t-J Hamiltonian) and the corresponding antiferromagnetic state. The resonating valence bond model is introduced both as a naive version, equivalent to the BCS treatment of the transverse spin fluctuations, as well as a holon-spinon version.
Keywords
EN
Publisher

Year
Volume
84
Issue
1
Pages
101-126
Physical description
Dates
published
1993-07
Contributors
author
  • C.N.R., Dipartimento di Fisica dell' Universitá, 43100 Parma, Italy
author
  • I.N.F.M., Dipartimento di Fisica dell' Universitá, 43100 Parma, Italy
References
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv84z105kz
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