Microwave absorption by charge density waves in La2-xSrxCuO4
I. I. Gimazov+, T. Adachi*, K. Omori×, Y. Tanabe×°, Y. Koike×, Yu. I. Talanov+
+Zavoisky Physical-Technical Institute, 420029 Kazan, Russia
*Department of Engineering and Applied Sciences, Sophia University, Chiyodaku, 102-8554 Tokyo, Japan
×Department of Applied Physics, Tohoku University, Aramaki, 980-8579 Sendai, Japan
° Department of Physics, Tohoku University, Aramaki, 980-8578 Sendai, Japan
Abstract
The results of studying the La2-xSrxCuO4 crystals
() with the microwave absorption, direct current
resistance and
magnetic susceptibility measurements are presented. The
doping-temperature phase diagram with the boundaries of the areas with charge
density waves, superconducting fluctuation and the bulk superconductivity
state is plotted. The doping range of the charge density wave existence
is found to be broader than that obtained from the X-Ray Diffraction
study. It spreads at least down to x=0.077.