Role of symmetry in Raman spectroscopy of unconventional superconductors

Thomas Peter Devereaux

doi:10.1117/12.241760

10 June 1996 Role of symmetry in Raman spectroscopy of unconventional superconductors

Thomas Peter Devereaux

Proceedings Volume 2696, Spectroscopic Studies of Superconductors; (1996) https://doi.org/10.1117/12.241760
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

The role of symmetry of the inelastic light scattering amplitude, the superconducting energy gap, and the underlying Fermi surface manifold on the Raman spectra of unconventional superconductors is discussed in detail. Particular emphasis is placed on both single and bi- layer superconductors. It is found that the B_1g channel may be the most sensitive to doping due to the role of the Van Hove singularity. Lastly the effect of both disorder and spin fluctuations is considered. The theory imposes strong constraints on both the magnitude and symmetry of the energy gap for the bi-layer cuprates, indicating that a nearly identical energy gap of d_x(2-y(2)) symmetry provides a best fit to the data.

Citation Download Citation

Thomas Peter Devereaux "Role of symmetry in Raman spectroscopy of unconventional superconductors", Proc. SPIE 2696, Spectroscopic Studies of Superconductors, (10 June 1996); https://doi.org/10.1117/12.241760

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