SUPERSTRIPES Self organization of quantum wires in high Tc superconductors

Abstract

We report experimental evidence for the phase diagram of doped cuprate superconductors as a function of the micro-strain (e) of the Cu-O bond length, measured by Cu K-edge EXAFS, and hole doping (d). This phase diagram shows a QCP at P(e*,d*) where for the micro-strain e larger than the critical value e* charge-orbital-spin stripes and free carriers co-exist. The superconducting phase occurs in the region of critical fluctuations around this QCP. The critical temperature is function of two variables and Tc shows its maximum at the strain driven QCP. The critical fluctuations near this strain QCP give the self-organization of a metallic superlattice of quantum wires "superstripes" that favors the amplification of the critical temperature.

arXiv comment19 pages, 9 figures

References in corpus (2)

• Neutron Scattering Study of Spin Density Wave Order in the Superconducting State of Excess-Oxygen-Doped La2CuO4+y
• SUPERSTRIPES Self organization of quantum wires in high Tc superconductors

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• Superstripes and complexity in high-temperature superconductors
• Shape resonances in multi-condensate granular superconductors formed by networks of nanoscale-striped puddles
• SUPERSTRIPES Self organization of quantum wires in high Tc superconductors