Bipolaron Jahn–Teller Pairing and Charge Transport in Cuprates
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- Miranda, J., Mertelj, T., Kabanov, V.V. et al. J Supercond Nov Magn (2009) 22: 281. doi:10.1007/s10948-008-0436-7
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Recently the mechanism for an intersite pairing was proposed for cuprates, where the coupling of two fold electronic degenerated levels to local lattice models at finite wave vector was introduced. The model is able to describe the stripe phase and offers a possible explanation of the pseudogap. Moreover, we argue that the single particle and pair conductivity may differ. For a better analysis on this issue, we compute the charge mobility arising from single particle using a variable range hopping model. The general trend is that the mobility has a crossover from 1/T temperature behavior at high temperature to a strong reduction of the mobility at low temperatures.