@article{alexandrov_boseeinstein_2007,
	title = {Bose–{Einstein} condensation of strongly correlated electrons and phonons in cuprate superconductors},
	volume = {19},
	issn = {0953-8984},
	url = {http://dx.doi.org/10.1088/0953-8984/19/12/125216},
	doi = {10.1088/0953-8984/19/12/125216},
	abstract = {The long-range Fröhlich electron–phonon interaction has been identified as the most essential for pairing in high-temperature superconductors owing to poor screening, as is now confirmed by optical, isotope substitution, recent photoemission and some other measurements. I argue that low-energy physics in cuprate superconductors is that of superlight small bipolarons, which are real-space hole pairs dressed by phonons in doped charge-transfer Mott insulators. They are itinerant quasiparticles existing in the Bloch states at low temperatures as also confirmed by the continuous-time quantum Monte–Carlo algorithm (CTQMC) fully taking into account realistic Coulomb and long-range Fröhlich interactions. Here I suggest that a parameter-free evaluation of T c , unusual upper critical fields, the normal state Nernst effect, diamagnetism, the Hall–Lorenz numbers and giant proximity effects strongly support the three-dimensional (3D) Bose–Einstein condensation (BEC) of mobile small bipolarons with zero off-diagonal order parameter above the resistive critical temperature T c at variance with phase fluctuation scenarios of cuprates.},
	number = {12},
	journal = {Journal of Physics: Condensed Matter},
	author = {Alexandrov, A. S.},
	month = mar,
	year = {2007},
	pages = {125216+}
}

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