In-plane optical response of Bi2Sr2CuO6

Details In-plane optical response of Bi2Sr2CuO6 In-plane optical response of Bi2Sr2CuO6

1997-03-03

arxiv.org/abs/cond-mat/9703028v1

Phys. Rev. B 55 (1997), 14152

Physics

Condensed Matter

Revtex, 4 pages, 4 postscript figures, Phys. Rev. B, in press

Scientific paper

10.1103/PhysRevB.55.14152

We report on infrared reflectivity measurements of the $ab$-plane response of superconducting Bi$_2$Sr$_2$CuO$_6$ single crystals. The frequency dependent conductivity has a maximum near 700 cm$^{-1}$ at room temperature, which shifts to lower frequency and merges with a Drude-peak below 100 K. We attribute the unusual behaviour of the mid-infrared conductivity to low frequency transitions between electronic bands of mainly BiO character near the $\overline{M}$ point. The linear temperature dependence of the low-frequency resistivity can be followed down to approximately 40 K where it saturates.

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