Infrared Hall effect in underdoped and optimally doped LSCO

Details Infrared Hall effect in underdoped and optimally doped LSCO Infrared Hall effect in underdoped and optimally doped LSCO

2005-10-28

arxiv.org/abs/cond-mat/0510794v2

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

We report a study of magneto-optical properties in the mid-infrared region of a series of La$_{2-x}$Sr$_x$CuO$_4$ samples with hole doping level ranging from severely underdoped ($x=0.03$)to optimally doped ($x=0.15$). The Faraday rotation and circular dichroism are measured in a magnetic field of 8 Tesla and in a temperature range between 30K and 300K. The doping and temperature dependence of infrared Hall angle is found to be understood within a simple Drude model. A significant increase of Hall frequency is observed when the hole doping level is reduced from optimal doping, which is compared with models of the pseudogap.

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