Low-energy signatures of charge and spin fluctuations in Raman and optical spectra of the cuprates

Details Low-energy signatures of charge and spin fluctuations in Raman and optical spectra of the cuprates Low-energy signatures of charge and spin fluctuations in Raman and optical spectra of the cuprates

2008-03-13

arxiv.org/abs/0803.1935v1

Physics

Condensed Matter

Superconductivity

6 pages, 4 figures, Proceedings of the Conference SMEC 2007 - Study of Matter at Extreme Conditions, Miami 2007

Scientific paper

10.1016/j.jpcs.2008.03.038

We calculate the optical and Raman response within a phenomenological model of fermion quasiparticles coupled to nearly critical collective modes. We find that, whereas critical scaling properties might be masked in optical spectra due to charge conservation, distinct critical signatures of charge and spin fluctuations can be detected in Raman spectra exploiting specific symmetry properties. We compare our results with recent experiments on the cuprates.

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