Influence of magnetic rare-earth ion substitution on the magnetic susceptibility of high-Tc superconductors
F. Zuo, B. R. Patton, D. L. Cox, S. I. Lee, Y. Song, J. P. Golben, X. D. Chen, S. Y. Lee, Y. Cao, Y. Lu, J. R. Gaines, J. C. Garland, A. J. Epstein
DOI 10.1103/PhysRevB.36.3603 · 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
We report detailed magnetic-susceptibility studies for the oxygen-deficient perovskite superconductors MBa2Cu3O7−δ (M=Y,Gd,Er,Ho). Normal-state behavior above Tc shows weak ferromagnetic (antiferromagnetic) tendencies for M=Y,Gd (M=Er,Ho), with 87% of the free-ion moment for M=Gd,Er,Ho. The estimated Fermi-level density of states is 6.4 states/eV Cu for M=Y,Gd, which is twice the band-structure estimate. The superconducting state shows a 20% or more flux exclusion at small field. The Curie contributions for M=Gd,Er,Ho are weakened for T<Tc due to diamagnetic screening. The local moments appear to have little or no effect on the superconducting state. These effects are well described by a simple theoretical model.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90 | Pressure not reported | unknown |
| GdBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90 | Pressure not reported | unknown |
| ErBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90 | Pressure not reported | unknown |
| HoBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90 | Pressure not reported | unknown |
Similar papers
Superconducting and normal-state magnetic-susceptibility anisotropy in YBa2Cu3O7
similarity 0.97W. C. Lee & D. C. Johnston
Source status unknown — claims are unverified
Magnetism and critical fields in the high-Tc superconductors YBa2Cu3O7−xSx(x=0, 1): An ESR study
similarity 0.96Carlos Rettori et al.
Source status unknown — claims are unverified
Superconductivity in HxYBa2Cu3O7
similarity 0.96J. J. Reilly et al.
Source status unknown — claims are unverified
Magnetic relaxation in sintered Tl2Ca2Ba2Cu3Ox and YBa2Cu3O7−x superconductors
similarity 0.96M. E. McHenry et al.
Source status unknown — claims are unverified
Local Magnetic Relaxation in High-Temperature Superconductors
similarity 0.96Y. Abulafia et al.
Source status unknown — claims are unverified
Magnetic penetration depth of high-Tc superconductors
similarity 0.96Hongguang Chi & A. D. S. Nagi
Source status unknown — claims are unverified