An effect of the uniaxial strain on the temperature of Bose-Einstein condensation of the intersite bipolarons

Abstract

We have studied an effect of uniaxial strain to the temperature of Bose-Einstein condensation of intersite bipolarons within the framework of Extended Holstein-Hubbard model. Uniaxial lattice strains are taken into an account by introducing a generalized density-displacement type force for electron-lattice interaction. Associating the superconducting critical temperature $T_c$ with the temperature of Bose-Einstein condensation $T_{BEC}$ of intersite bipolarons we have calculated strain derivatives of $T_{BEC}$ and satisfactorily explained the results of the experiments on La-based high-$T_c$ films.

6 pages, 3 figures

References in corpus (2)

• Interplay between electron-phonon and Coulomb interactions in cuprates
• Bipolaron in the t-J model coupled to longitudinal and transverse quantum lattice vibrations

Cited by in corpus (2)

• An approach for studying the influence of uniaxial strain (pressure) on the temperature of the Bose-Einstein condensation of intersite bipolarons: possible implementation for RBa${}_2$Cu${}_3$O${}_{7-\delta }$ cuprates
• Effect of screening of the electron-phonon interaction on the temperature of Bose-Einstein condensation of intersite bipolarons