The combined effect of lattice's uniaxial strains and electron-phonon interaction's screening on T-BEC of the intersite bipolarons

Having accepted a more generalized form for density-displacement type electron-phonon interaction (EPI) force we studied the simultaneous effect of uniaxial strains and EPI's screening on the temperature of Bose-Einstein condensation (T-BEC) of the ideal gas of intersite bipolarons. T-BEC of the ideal gas of intersite bipolarons is calculated as a function of both strain and screening radius for a one-dimensional chain model of cuprates within the framework of Extended Holstein-Hubbard model. It is shown that the chain model lattice comprises the essential features of cuprates regarding of strain and screening effects on transition temperature (T-c) of superconductivity. The obtained values of strain derivatives of partial derivative T-BEC/partial derivative epsilon(i) (i = a, c) are in qualitative agreement with the experimental values of partial derivative T-c/partial derivative epsilon(i) (i = a, b, c) of La2-xSrxCuO4 under moderate screening regimes.