Effect of an electric field on oxygen ordering and superconducting temperature of YBa2Cu3O6+x thin films
G. Grigelionis, E. E. Tornau, A. Rosengren
DOI 10.1103/PhysRevB.53.425 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
The effect of an external electric field on the superconducting temperature Tc of YBa2Cu3O6+x thin films is studied by the cluster-variation method. We present a model in which the field effect on Tc is related to the oxygen ordering. Electric dipole moments of oxygen occur due to charge transfer from the O-Cu-O chains in the CuOx layers to the CuO2 layers. The polarization in the external field is assumed to depend on the length of these chains. A notable enhancement of Tc is found at the border between the tetragonal (semiconducting) and orthorhombic (metallic) phases (0.3≲x≲0.4). It is also demonstrated that moderate external fields do not increase the length of the chains and do not affect Tc at high values of the oxygen concentration x. © 1996 The American Physical Society.
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. | 93 | Pressure not reported | unknown |
| 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 |
| YBa2Cu3O6+x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90 | Pressure not reported | unknown |
| Bi2Sr2CaCu2O8+x Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Intrinsic electronic superconducting phases at 60K and 90K in double-layer YBa2Cu3O6+δ
similarity 0.96T. Honma & P. H. Hor
Source status unknown — claims are unverified
Temperature and magnetic-field dependence of the conductivity of YBa2Cu3O7−δ films in the vicinity of the superconducting transition: Effect of Tc inhomogeneity
similarity 0.96D. V. Shantsev et al.
Source status unknown — claims are unverified
Enhanced Coherent Terahertz Emission from Critical Superconducting Fluctuations in YBa2Cu3O6.6
similarity 0.95D. Nicoletti et al.
Source status unknown — claims are unverified
Metallization and superconducting properties of YBa2Cu3O6.2Bry
similarity 0.95H. B. Radousky et al.
Source status unknown — claims are unverified
Origin of the variation of Tc with superconducting layer thickness and separation in YBa2Cu3O7−x/PrBa2Cu3O7 superlattices
similarity 0.95R. G. Goodrich et al.
Source status unknown — claims are unverified
Normal-superconducting transition induced by high current densities in YBa2Cu3O7−δ melt-textured samples and thin films: Similarities and differences
similarity 0.95M. T. González et al.
Source status unknown — claims are unverified