Theory of Raman scattering from gap excitations in weakly coupled high-temperature superconductors

1 May 1989

journal article
Published by American Physical Society (APS) in Physical Review B

Vol. 39 (13) , 9049-9053
https://doi.org/10.1103/physrevb.39.9049

Abstract

A theory of Raman scattering from gap excitations in high-temperature superconductors is presented in which a spin-density-wave gap g is treated on an equal footing with the superconducting gap Δ. Calculations are carried out in the weak-coupling regime, for which the Hubbard energy I is assumed to be much less than the bandwidth W. An electronic scattering cross section for T=0 is calculated which shows a definite threshold dependent on both g and Δ.

Keywords

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