6533b830fe1ef96bd129678e
RESEARCH PRODUCT
Direct observation of the quasiparticle relaxation in YBa2Cu3O7
Andrei PimenovAlois LoidlGerhard JakobH. Adriansubject
PhysicsSuperconductivityCondensed matter physicsCondensed Matter PhysicsOptical conductivityElectronic Optical and Magnetic MaterialsCondensed Matter::SuperconductivityScattering rateQuasiparticleRelaxation (physics)Electrical and Electronic EngineeringThin filmSpectroscopySpin-½description
Abstract The real and imaginary parts of the optical conductivity ( σ 1 + iσ 2 ) in the superconducting state of YBa 2 Cu 3 O 7−δ 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 C .
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1999-01-01 |