Inhaltszusammenfassung

The real and imaginary parts of the optical conductivity ?1 i?2 of partly untwinned YBa2Cu3O7-? thin films were measured by submillimeter spectroscopy for frequencies from 100 GHz to 1 THz. The frequency dependence of the conductivity below TC can be described by a narrow Drude-like peak with strongly temperature-dependent relaxation rates. ?1(?) does not extrapolate to the universal d-wave value at 0 K. Impurity scattering significantly different to the unitary limit has to be assumed to ach...The real and imaginary parts of the optical conductivity ?1 i?2 of partly untwinned YBa2Cu3O7-? thin films were measured by submillimeter spectroscopy for frequencies from 100 GHz to 1 THz. The frequency dependence of the conductivity below TC can be described by a narrow Drude-like peak with strongly temperature-dependent relaxation rates. ?1(?) does not extrapolate to the universal d-wave value at 0 K. Impurity scattering significantly different to the unitary limit has to be assumed to achieve agreement with recent theoretical results. Including published infrared results we present ?1(?) in the spectral range from 0.1?100 THz. » weiterlesen» einklappen

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Klassifikation

DFG Fachgebiet:
Physik der kondensierten Materie

DDC Sachgruppe:
Physik