Fizika Nizkikh Temperatur: Volume 48, Number 7 (July 2022), p. 575-581    ( to contents , go back )

Influence of various scattering mechanisms on thermal conductivity of doped Pr1.3–xLa0.7CexCuO4 high-temperature superconductor

Akanksha Parmar1, A. K. Dimri2, and M. K. Bera1

1Department of Physics, Maharishi Markandeshwar (Deemed to be University), Mullana Ambala 133207, Haryana, India
E-mail: m.k.bera@mmumullana.org

2Department of Physics, Maharaj Singh College, Sa-haranpur 247001, Uttar Pradesh, India
pos Анотація:766

Received January 31, 2022, revised March 15, 2022, published online May 20, 2022

Abstract

A theoretical analysis of thermal conductivity of high-temperature superconductor cuprates, Pr1.3–xLa0.7CexCuO4 (PLCCO), has been successfully investigated. In this formulation, the idea of relaxation times and other scattering processes has been developed from frequency (energy) line widths using a quantum dynamical method. The major emphasis of this study is on the influence of phonon-dopant atom scattering on the thermal conductivity of Ce-doped PLCCO, as well as other prominent scattering processes such as electron-phonon, cubic and quartic anharmonic phonon, cubic and quartic phonon interference, and so on. The proposed theory has achieved a satisfactory agreement between theory and experiment.

Key words:  high-temperature superconductors, lattice thermal conductivity, relaxation rate, Ce-doped PLCCO, phonon scattering.

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