A common thread: The pairing interaction for unconventional superconductors

D. J. Scalapino
Rev. Mod. Phys. 84, 1383 – Published 8 October 2012

Abstract

The structures, the phase diagrams, and the appearance of a neutron resonance signaling an unconventional superconducting state provide phenomenological evidence relating the cuprates, the Fe-pnictides and chalcogenides as well as some heavy-fermion and actinide materials. Single-band and multiband Hubbard models have been found to describe a number of the observed properties of these materials so that it is reasonable to examine the origin of the pairing interaction in these models. In this review, based on the experimental phenomenology and studies of the pairing interaction for Hubbard-like models, it is proposed that spin-fluctuation mediated pairing is the common thread linking a broad class of superconducting materials.

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  • Received 3 October 2011

DOI:https://doi.org/10.1103/RevModPhys.84.1383

© 2012 American Physical Society

Authors & Affiliations

D. J. Scalapino*

  • Department of Physics, University of California, Santa Barbara, California 93106-9530, USA

  • *djs@physics.ucsb.edu

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Issue

Vol. 84, Iss. 4 — October - December 2012

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