Optical conductivity to probe boson structure


  • In commemoration of Paul Drude (1863–1906)


The phonon structure in optical data can be inverted to obtain the transport electron-phonon spectral density α2Ftr(o). For more general electron-boson exchange models we test the accuracy of using Allen's approximate relationship between spectral density and optical scattering rate instead of complete Eliashberg equation results. Both, s-wave and d-wave superconducting gap symmetries are considered.