Schedule Nov 22, 2002
Emergence of conducting state in weakly doped La2-xSrxCuO4 single crystals
Dmitri Basov, UC San Diego
I will overview recent infrared studies of high quality La2-xSrxCuO4 single crystals starting from ultra-low dopings and continuing in the superconducting region of the phase diagram. Spectroscopic measurements uncovered metallic conductivity at doping levels as small as 1%. The optical conductivity revealed significant anisotropy in the regime of the so called diagonal spin stripes (x<0.05). These experiments indicate that the formation of spin-ordered textures in La2-xSrxCuO4 series has a profound effect on the dynamics of charge carriers.

This work is a collaboration with W.J. Padilla, M.Dumm (UCSD) and Y.Ando (CRIEPI)

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