Coexistence of stripes and superconductivity: Tc amplification in a superlattice of superconducting stripes
Journal
Physica C: Superconductivity and its Applications
Journal Volume
341-348
Journal Issue
PART 2
Pages
1719-1722
Date Issued
2000
Author(s)
Bianconi, A.
Di Castro, D.
Bianconi, G.
Pifferi, A.
Saini, N. L.
Johnston, D. C.
Colapietro, M.
Abstract
Here we report direct evidence for charge ordering in the oxygen doped La2CuO4, superconductor by x-ray diffraction using a third generation synchrotron source. We observe ID charge ordering and oxygen ordering in an optimally doped superconductor (Tc=40K) well beyond the phase separation regime. The order parameter of the anharmonic ID CDW shows a critical behavior (Tco-T)0.5 with Tco= 190K. The oxygen ordering and the polaron 1D CDW with its associated orbital wave, realize a superlattice of quantum stripes with a wavevector that at the density of charge carriers, rs-6, in the superconducting stripes satisfies the shape resonance condition for Tc amplification. © 2000 Elsevier Science B.V. All rights reserved.
Publisher
Elsevier B.V.
Type
journal article