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SUPERSTRIPES Self organization of quantum wires in high Tc superconductors | | A. Bianconi
; D. Di Castro
; N. L. Saini
; G. Bianconi
; | | Date: |
25 Jul 2011 | | 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. | | Source: | arXiv, 1107.4858 | | Services: | Forum | Review | PDF | Favorites | |
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