Phys. Rev. Lett. 81, 433–436 (1998)Experimental and Theoretical Constraints of Bipolaronic Superconductivity in High Tc Materials: An ImpossibilityReceived 8 December 1997; published in the issue dated 13 July 1998 The bipolaronic scenario for high Tc superconductivity is critically examined. The underlying assumption that at low temperatures all the charge carriers exist in the form of itinerant bipolarons is shown to be incompatible on theoretical and experimental grounds. Superfluidity of such bipolarons cannot give the values of Tc nor explain the fermionic nature of the quasiparticles observed in the cuprates. © 1998 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.81.433
DOI:
10.1103/PhysRevLett.81.433
PACS:
74.20.Mn, 71.38.+i
See AlsoComment: A. S. Alexandrov, Comment on “Experimental and Theoretical Constraints of Bipolaronic Superconductivity in High Tc Materials: An Impossibility”, Phys. Rev. Lett. 82, 2620 (1999). Reply: B. K. Chakraverty, J. Ranninger, and D. Feinberg, Chakraverty et al. Reply:, Phys. Rev. Lett. 82, 2621 (1999). |
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