High Temperature Superconductors at Pressure: Theoretical Investigation

Abstract

In this paper we have theoretically predicted the behaviour of high temperature superconductors under different compression. Different properties such as isothermal bulk modulus at different compressions, and pressure derivative of isothermal bulk modulus have been established by using three different equation of states (I) Brennan – Stacey EOS, (II) Birch – Murnaghan EOS, (III) Vinet – Rydberg EOS for La₂CuO_4, La_2-xSrCuO₄ high-temperature superconductors. The result shows that the first derivative of isothermal bulk modulus decreases as compression increases.