Phenomenological description of the microwave surface impedance and complex conductivity of high-$T_c$ single crystals

M. R. Trunin, Yu. A. Nefyodov, H. J. Fink

Measurements of the microwave surface impedance $Z_s(T)=R_s(T)+i{X}_s(T)$ and of the complex conductivity ${\sigma }_s(T)$ of high-quality, high-$T_c$ single crystals of YBCO, BSCCO, TBCCO,…