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Superconductivity accounted for by electron pairing through an effective lattice-mediated attraction and described quantitatively by BCS or Eliashberg theory in its regime of validity.
wp-physics-bcs-theorywp-physics-superconductivityaps-bcs-theorynobel-bcs-1972mit-theory-of-solidsEach relation below ends at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
Conventional superconductivity is collective order of strongly overlapping Cooper pairs; a collection of isolated pairs without phase coherence is not by itself a superconducting state.
The target is a collective, organizational, or scale-dependent phenomenon of the source constituents and interactions; it is not a mere list or classical sum of constituents.
wp-physics-cooper-pairwp-physics-bcs-theoryaps-bcs-theorymit-theory-of-solidsThis is an authored directed relation from the source endpoint to the target endpoint.
In conventional superconductors, electron–phonon coupling can produce a retarded effective attraction that supports Cooper pairing; this edge does not claim that all superconductivity is phonon mediated.
The source field, particle, charge, current, or interaction couples to, acts on, binds, forms, or stabilizes the target in the stated regime. The edge label and detail must identify the exact coupling, interaction, or binding claim and its qualifications.
wp-physics-bcs-theorywp-physics-phononaps-bcs-theorymit-theory-of-solidsThis is an authored directed relation from the source endpoint to the target endpoint.
Conventional superconductors are the subclass whose pairing and measured properties are accounted for by lattice-mediated BCS or Eliashberg theory.
The target is a member or subtype of the broader source class.
wp-physics-bcs-theorywp-physics-superconductivityaps-bcs-theorynobel-bcs-1972Each relation below starts at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
BCS theory models the weak-coupling conventional superconducting phase and its gap, thermodynamics, and electromagnetic response; strong-coupling and unconventional materials require extensions or different theories.
The target is a model, idealization, restricted ansatz, approximation scheme, phenomenological fit, or historical representation used for the source system or theory. It need not have a universal small error parameter and is not thereby a controlled limit or effective theory. The edge label and detail must identify the precise status.
wp-physics-bcs-theoryaps-bcs-theorynobel-bcs-1972mit-theory-of-solids