Absence of static phase separation in the high-Tc cuprate $YB{a}_{2}C{u}_3{O}_{6+y}$

Abstract

We use 89Y NMR in $YB{a}_{2}C{u}_3{O}_{6+y}$ in order to evaluate with high sensitivity the distribution of hole content p in the CuO2 planes. For y=1 and y=0.6, this hole doping distribution is found narrow with a full width at half maximum smaller than Delta p=0.025. This rules out any large static phase separation between underdoped and optimally doped regions in contrast with the one observed by STM in Bi2212 and by NQR in LaSrCuO. This establishes that static electronic phase separation is not a generic feature of the cuprates.

published in Phys.Rev.Lett. 89, 157002 (2002) (only minor changes as compared to previous version) Article of 4 pages + 3 figures

References in corpus (6)

• Discovery of microscopic electronic inhomogeneity in the high-Tc superconductor Bi2Sr2CaCu2O8+x
• Imaging the granular structure of high-Tc superconductivity in underdoped Bi2Sr2CaCu2O8+x
• Inherent Inhomogeneities in Tunneling Spectra of BSCCO Crystals in the Superconducting State
• (63)Cu NQR Evidence for Spatial Variation of Hole Concentration in La(2-x)Sr(x)CuO(4)
• Evidence of Doping-Dependent Pairing Symmetry in Cuprate Superconductors
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