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Polaron and bipolaron of uniaxially strained one dimensional zigzag ladder

2016    Yavidov, B. Ya.

An influence of the uniaxial strains in one dimensional zigzag ladder (1DZL) on the properties of polarons and bipolarons is considered. It is shown that strain changes all the parameters of the system, in particular, spectrum, existing bands and the masses of charge carriers. Numerical results obtained by taking into an account the Poisson effect clearly indicate that the properties of the (bi)polaronic system can be tuned via strain. Mass of bipolaron can be manipulated by the strain too which in turn leads to the way of tuning Bose-Einstein condensation temperature T-BEC of bipolarons. It is shown that T-BEC of bipolarons in strained 1DZL reasonably correlates with the values of critical temperature of superconductivity of certain perovs kites. (C) 2016 Elsevier B.V. All rights reserved.