Terahertz Hall Measurements On Optimally Doped Single Crystal Bi-2212

Details Terahertz Hall Measurements On Optimally Doped Single Crystal Bi-2212 Terahertz Hall Measurements On Optimally Doped Single Crystal Bi-2212

2010-06-26

arxiv.org/abs/1006.5106v1

Phys. Rev. B 82, 094518 (2010)

Physics

Condensed Matter

Superconductivity

10 pages, 2 figures

Scientific paper

10.1103/PhysRevB.82.094518

The infrared Hall angle in optimally doped single crystal $\rm Bi_2 Sr_2 Ca Cu_2 O_{8+x}$ was measured from 3.05 to 21.75 meV as a continuous function of temperature from 25 to 300\,K. In the normal state, the temperature dependence of the real part of the cotangent of the infrared Hall angle obeys the same power law as dc measurements. The measured Hall frequency $\rm \omega_H$ is significantly larger than the expected value based upon ARPES data analyzed in terms of the relaxation time approximation. This discrepancy as well as the temperature dependence of $\rm Re(\cot{\theta_H})$ and $\omega_H$ is well described by a Fermi liquid theory in which current vertex corrections produced by electron-magnon scattering are included.

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