Cu NMR Study of Detwinned Single Crystals of Ortho--II YBCO6.5

Abstract

Copper NMR has been used as a local probe of the oxygen ordering in Ortho--II YBa2Cu3O6.5 crystals grown in BaZrO3 crucibles. Line assignments have been made to each of the expected crystallographically inequivalent sites. The presence of distinct and narrow lines for these sites as well as the lack of a line known to be associated with oxygen defects indicates that these crystals are highly stoichiometric. Our estimate of the lower limit on the chain length is consistent with that derived from X-ray diffraction measurements. In addition, we have found no evidence for static magnetic moments, in contrast to some previous results.

arXiv comment11 pages, 7 figures, submitted to Physica C

References in corpus (8)

• The pseudogap in high-temperature superconductors: an experimental survey
• Hidden Order in the Cuprates
• Antiferromagnetic ordering in superconducting $\mathbf{YB}{\mathbf{a}}_2\mathbf{C}{\mathbf{u}}_3{\mathbf{O}}_{6.5}$
• Observation of Magnetic Moments in the Superconducting State of YBa${}_2$Cu${}_3$O${}_{6.6}$
• Correlations Between Charge Ordering and Local Magnetic Fields in Overdoped YBa${}_2$Cu${}_3$O${}_{6+x}$
• Neutron scattering search for static magnetism in oxygen ordered YBa2Cu3O6.5
• Experimental evidence for fast cluster formation of chain oxygen vacancies in YBa2Cu3O7-d being at the origin of the fishtail anomaly
• Characterization of localized hole states in Pr_(1+x)Ba_(2-x)Cu_(3)O_(6+y) by nuclear magnetic resonance

Cited by in corpus (12)

• Magnetic-field-induced charge-stripe order in the high temperature superconductor YBa2Cu3Oy
• The a-axis optical conductivity of detwinned ortho-II YBa_2Cu_3O_6.50
• Spin dynamics near the critical doping in weakly-superconducting underdoped YBa2Cu3O6.35 (Tc=18K)
• Revealing the ortho-II Band Folding in YBa2Cu3O7-delta Films
• Coherence and superconductivity in coupled one-dimensional chains: a case study of YBa${}_2$Cu${}_3$O${}_y$
• NMR evidence for Friedel-like oscillations in the CuO chains of ortho-II YBa${}_2$Cu${}_3$O${}_{6.5}$
• Cu-NMR study of oxygen disorder in ortho-II YBa2Cu3Oy
• Magnetic properties of lightly doped antiferromagnetic YBa${}_2$Cu${}_3$O${}_y$
• Impact of chain fragmentation on charge transfer scenario and two-plateaus-like behavior of Tc(x) in YBa2Cu3O6+x
• Magnetic correlations on the full chains of Ortho-II YBa${}_2$Cu${}_3$O${}_{6.5}$
• Origin of the 60K plateau in YBa_2Cu_3O_6+x
• Magnetic anisotropy from linear defect structures in correlated electron systems