10.25358/DSPACE-DEV-71398
Pimenov, A.
Loidl, A.
Jakob, Gerhard
Adrian, Hermann
Direct observation of the quasiparticle relaxation in YBa2Cu3O7-delta
Johannes Gutenberg-Universität Mainz
1999
530 Physik
530 Physics
Johannes Gutenberg-Universität Mainz
Johannes Gutenberg-Universität Mainz
2020-03-12
2020-03-12
1999
Physica : B, Condensed matter. Bd. 259/261. Amsterdam : Elsevier. S. 524 - 525
https://dspace-dev.ub.uni-mainz.de/handle/20.500.12030/124449
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.