The Coupling of a Wigner Polaronic Charge Density Wave with a Fermi Liquid Arising from the Instability of a Wigner Polaron Crystal: a Possible Pairing Mechanism in High Tc Superconductors

Details The Coupling of a Wigner Polaronic Charge Density Wave with a Fermi Liquid Arising from the Instability of a Wigner Polaron Crystal: a Possible Pairing Mechanism in High Tc Superconductors The Coupling of a Wigner Polaronic Charge Density Wave with a Fermi Liquid Arising from the Instability of a Wigner Polaron Crystal: a Possible Pairing Mechanism in High Tc Superconductors

2009-06-29

arxiv.org/abs/0906.5341v2

Phase Separation in Cuprate Superconductors, edited by E. Sigmund and A. K. Muller, Springer Verlag, Berlin-Heidelberg pag. 27

Physics

Condensed Matter

Superconductivity

21 pages, 8 figures; Proceedings of the 2nd Workshop on "Phase Separation in Cuprate Superconductors" Cottbus, Germany Sept 4-

Scientific paper

We report evidence that the metallic phase in high Tc cuprate superconductors results from an instability of the quasi 2D-electron gas at densities lower or larger than the critical density for the formation of a Wigner polaronic crystal. The electron gas undergoes a microscopic phase separation between 1) a polaron gas with density 1/8 at the Wigner localization limit and 2) a Fermi liquid confined in a superlattice of quantum stripes. The 2D-polaron gas condenses into a paired unidimensional Wigner charge density wave (CDW) at T

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