OPTICAL REFLECTIVITY STUDY ON THE SINGLE CRYSTALLINE (La1−xSrx)2CuO4
- 1 January 1988
- journal article
- research article
- Published by World Scientific Pub Co Pte Ltd in Modern Physics Letters B
- Vol. 01 (09n10) , 353-361
- https://doi.org/10.1142/s0217984988001399
Abstract
The optical reflectivity spectra were measured for single crystalline La2CuO4 and La1.8Sr0.2CuO4 over a wide energy range from 12meV to 3eV. Comparing the phonon spectrum of single crystal with that of polycrystal, the observed four phonon modes can be classified into the two—the vibrations parallel and perpendicular to the c-axis. The infrared spectrum of La1.8Sr0.2CuO4 shows the normal Drude-type behavior without any extra excitation.Keywords
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