Inhaltszusammenfassung

The real and imaginary parts of the optical conductivity (?1 i?2) in the superconducting state of YBa2Cu3O7?? thin films have been obtained by submillimeter spectroscopy for frequencies from 3 to 35 cm?1. The quasiparticle relaxation can be directly observed in this frequency range. A Drude-type analysis allows to extract the temperature dependence of the scattering rate. The collapse of the relaxation rates provides clear experimental evidence that the spin fluctuations become gapped below T...The real and imaginary parts of the optical conductivity (?1 i?2) in the superconducting state of YBa2Cu3O7?? thin films have been obtained by submillimeter spectroscopy for frequencies from 3 to 35 cm?1. The quasiparticle relaxation can be directly observed in this frequency range. A Drude-type analysis allows to extract the temperature dependence of the scattering rate. The collapse of the relaxation rates provides clear experimental evidence that the spin fluctuations become gapped below TC. » weiterlesen» einklappen

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Klassifikation

DFG Fachgebiet:
Physik der kondensierten Materie

DDC Sachgruppe:
Physik