X-ray diffraction study of lattice modulations in an underdoped YBa2Cu3O6+x superconductor
Zahirul Islam, S. K. Sinha, D. Haskel, J. C. Lang, G. Srajer, B. W. Veal, D. R. Haeffner, H. A. Mook
DOI 10.1103/PhysRevB.66.092501 · Physical Review B
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Abstract
We report a temperature-dependent increase below ∼220 K of diffuse superlattice peaks corresponding to q0=(∼25,0,0) in an underdoped YBa2Cu3O6+x superconductor (x≈0.63). These peaks reveal strong c-axis correlations involving the CuO2 bilayers, show a nonuniform increase below ∼220K with a plateau for ∼100–160K, and appear to saturate in the superconducting phase. We propose that this temperature dependence of the superlattice peaks is a possible manifestation of charge stripes in the CuO2 planes which are coupled to the oxygen-ordered superstructure.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O6+x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 60 | Pressure not reported | unknown |
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