Excitations of a diamagnetic hole state in the copper oxide superconductors

M. J. Rice and Y. R. Wang
Phys. Rev. B 36, 8794 – Published 1 December 1987
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Abstract

The strong infrared (ir) absorption features observed in the copper oxide superconductors are interpreted to be internal electronic and vibrational excitations of a spin-zero charge-transfer complex (P+) formed between a hole and an essentially single paramagnetic square planar CuO4 unit (P0). The large magnitude and bimodal frequency dependence of the electronic polarizability implied by the ir data for P+ favors a combined excitonic and "charged phonon" mechanism for superconductivity. It is possible that the carriers of the superconductivity are the highly correlated electrons belonging to the P0's, while the P+'s play the role of highly polarizable impurities. The P+'s can delocalize as band polarons.

  • Received 17 August 1987

DOI:https://doi.org/10.1103/PhysRevB.36.8794

©1987 American Physical Society

Authors & Affiliations

M. J. Rice and Y. R. Wang

  • Xerox Webster Research Center, Webster, New York 14580

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Issue

Vol. 36, Iss. 16 — 1 December 1987

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