Optics clues to pairing glues in high T$_{c}$ cuprates

Authors :: van Heumen, E.
Kuzmenko, A. B.
van der Marel, D.
Source :: J. Phys.: Conf. Ser. 150, 052278 (2009)
Publication Year :: 2009
Abstract: We analyze optical spectra of high temperature superconductors using a minimal model of electrons coupled to bosons. We consider the marginal Fermi liquid theory and the spin fluctuation theory, as well as a histogram representation of the bosonic spectral density. We find that the two theories can both be used to describe the experimental data provided that we allow for an additional scattering channel with an energy of 55 meV.<br />Comment: 9 pages, 3 figures. proceedings of the 25th international conference on low temperature physics (LT25)