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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