Quantum Dynamical Approach to Various Scattering Mechanisms and Their Influences on Thermal Conductivity of Sr- and Zn-Doped La2CuO4 High-Temperature Superconductor Cuprate.

A theoretical investigation of the thermal conductivity of lightly Sr- and Zn-doped La₂CuO₄ high temperature superconductor cuprates has been analyzed auspiciously. We used a quantum dynamical technique to develop the symbol of relaxation time and other scattering processes from frequency (energy) line widths in this formulation. The primary focus of this study is the effect of phonon-dopant atom scattering on the thermal conductivity of doped La₂CuO₄, as well as other dominant scattering mechanisms such as electron–phonon, cubic and quartic anharmonic phonon, cubic and quartic phonon interference, and phonon-magnon, among others. An acceptable level of agreement between theory and experiment has been reached. [ABSTRACT FROM AUTHOR]