Infrared Hall effect in high Tc superconductors: Evidence for non-Fermi liquid Hall scattering

Details Infrared Hall effect in high Tc superconductors: Evidence for non-Fermi liquid Hall scattering Infrared Hall effect in high Tc superconductors: Evidence for non-Fermi liquid Hall scattering

1999-08-02

arxiv.org/abs/cond-mat/9908033v1

Physics

Condensed Matter

Superconductivity

8 pages, 3 figures

Scientific paper

10.1103/PhysRevLett.84.3418

Infrared (20-120 cm-1 and 900-1100 cm-1) Faraday rotation and circular dichroism are measured in high Tc superconductors using sensitive polarization modulation techniques. Optimally doped YBCO thin films are studied at temperatures down to 15 K and magnetic fields up to 8 T. At 1000 cm-1 the Hall conductivity varies strongly with temperature in contrast to the longitudinal conductivity which is nearly independent of temperature. The Hall scattering rate has a T^2 temperature dependence but, unlike a Fermi liquid, depends only weakly on frequency. The experiment puts severe constraints on theories of transport in the normal state of high Tc superconductors.

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