Comment on `Experimental and Theoretical Constraints of Bipolaronic Superconductivity in High $T_c$ Materials: An Impossibility'

Abstract

We show that objections raised by Chakraverty $et$ $al$ (Phys. Rev. Lett. 81, 433 (1998)) to the bipolaron model of superconducting cuprates are the result of an incorrect approximation for the bipolaron energy spectrum and misuse of the bipolaron theory. The consideration, which takes into account the multiband energy structure of bipolarons and the unscreened electron-phonon interaction clearly indicates that cuprates are in the Bose-Einstein condensation regime with mobile charged bosons.

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References in corpus (1)

• Low Temperature Superfluid Response of High-Tc Superconductors

Cited by in corpus (12)

• Parameter-free expression for superconducting Tc in cuprates
• Effects of lattice geometry and interaction range on polaron dynamics
• Electrical resistivity of the Ti4O7 Magneli phase under high pressure
• Spin singlet small bipolarons in Nb-doped BaTiO3
• Bose-Einstein condensation of strongly correlated electrons and phonons in cuprate superconductors
• Angle-resolved photoemission in doped charge-transfer Mott insulators
• Translational-invariant bipolarons and superconductivity
• Green's and spectral functions of the small Frolich polaron
• Superconducting properties of 3D low-density TI-bipolaron gas in magnetic field
• Quasiparticle lifetimes in the charged Bose gas and the cuprates
• D-wave Bose-Einstein condensation and the London penetration depth in superconducting cuprates
• Stability conditions for a large anharmonic bipolaron