Effect of Disorder Outside the CuO2 Planes on Tc of Copper Oxide Superconductors
K. Fujita, T. Noda, K. M. Kojima, H. Eisaki, S. Uchida
DOI 10.1103/PhysRevLett.95.097006 · Physical Review Letters
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 disorder on the superconducting transition temperature Tc of cuprate superconductors is examined. Disorder is introduced into the cation sites in the plane adjacent to the CuO2 planes of two single-layer systems, Bi2.0Sr1.6Ln0.4CuO6+δ and La1.85−yNdySr0.15CuO4. Disorder is controlled by changing rare earth (Ln) ions with a different ionic radius in the former, and by varying the Nd content in the latter with the doped carrier density kept constant. We show that this type of disorder works as weak scatterers in contrast to the in-plane disorder produced by Zn, but remarkably reduces Tc, suggesting novel effects of disorder on high-Tc superconductivity.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2.0Sr1.6La0.4CuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 35 | Pressure not reported | onset |
| La1.85Sr0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 39 | Pressure not reported | onset |
| Bi2Sr2CuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 45 | Pressure not reported | unknown |
Similar papers
Correlation between oxygen isotope effects on transition temperature and magnetic penetration depth in high-temperature superconductors close to optimal doping
similarity 0.96R. Khasanov et al.
Source status unknown — claims are unverified
Local lattice instability and superconductivity in La1.85Sr0.15Cu1−xMxO4 (M=Mn, Ni, and Co)
similarity 0.96C. J. Zhang & H. Oyanagi
Source status unknown — claims are unverified
Role of structural disorder in artificially layered high-temperature superconductors
similarity 0.95G. Balestrino et al.
Source status unknown — claims are unverified
Magnetic pair-breaking effects: Moment formation and critical doping level in superconducting La1.85Sr0.15Cu1−xAxO4 systems (A=Fe,Co,Ni,Zn,Ga,Al)
similarity 0.95Gang Xiao et al.
Source status unknown — claims are unverified
Lattice Instabilities in Cuprate Superconductors: A Possible Limiting Mechanism for Tc
similarity 0.95M. Lang et al.
Source status unknown — claims are unverified
Effects of Zn substitution on the superconductivity and pseudogap in HgBa2CuO4+δ with various doping levels
similarity 0.95A. Yamamoto et al.
Source status unknown — claims are unverified