Abstract
We consider the doping dependence of the normal and superconducting properties of La2−x Sr x CuO4 in the low energy effective model based on the ab initio LDA+GTB calculations. We have found that two quantum phase transitions (QPT) of the Lifshitz type correspond well to the experimental phase diagram. For superconducting state, we have considered both magnetic and phonon mechanisms of pairing. Finally, we compare the true Fermi surface and the spectral intensity map seen in ARPES within a new norm conserving cluster perturbation theory (NC-CPT).
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Acknowledgements
This work is supported by Grants NS-1044.2012.2, MK-1168.2012.2, RFFI grant 13-02-01395, GK 16.740.12.0731, Project SORAN 44, Siberian Federal University F11, Dynasty Foundation.
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Ovchinnikov, S., Korshunov, M., Nikolaev, S. et al. Normal and Superconducting Properties of Cuprates in Multielectron Theory. J Supercond Nov Magn 26, 2831–2835 (2013). https://doi.org/10.1007/s10948-013-2263-8
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DOI: https://doi.org/10.1007/s10948-013-2263-8