Enhancement of electronic inhomogeneities due to out-of-plane disorder in Bi2Sr2CuO6+δ superconductors observed by scanning tunneling spectroscopy
A. Sugimoto, S. Kashiwaya, H. Eisaki, H. Kashiwaya, H. Tsuchiura, Y. Tanaka, K. Fujita, S. Uchida
DOI 10.1103/PhysRevB.74.094503 · 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
Nanoscale electronic inhomogeneity in optimally doped single-layer Bi2Sr1.6L0.4CuO6+δ, (L-Bi2201, L=La and Gd) as well as bilayer Bi2Sr2CaCu2O8+δ (Bi2212), superconductors has been investigated by the low-temperature scanning-tunneling-microscopy and spectroscopy. The inhomogeneous gap structures are observed above and below Tc on Gd-Bi2201. Increasing the out-of-plane disorder which is controlled by mismatch of the ionic radius between Sr and Ln results in the enhancement of pseudogap region with suppressed coherence peaks in the conductance spectrum, making the gap average larger and the gap distribution wider. The degree of electronic inhomogeneity measured by the distribution width of the gap amplitude is shown to have a correlation with Tc in optimally doped Bi2201 and Bi2212.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr1.6La0.4CuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 34 | Pressure not reported | unknown |
| Bi2Sr1.6La0.4CuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 34 | Pressure not reported | unknown |
| Bi2Sr1.6Gd0.4CuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 14 | Pressure not reported | unknown |
| Bi2Sr1.6Gd0.4CuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 14 | Pressure not reported | unknown |
| Bi2.1Sr1.9CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 93 | Pressure not reported | unknown |
Similar papers
Effect of Disorder Outside the CuO2 Planes on Tc of Copper Oxide Superconductors
similarity 0.96K. Fujita et al.
Source status unknown — claims are unverified
Detection of Acoustic Plasmons in Hole-Doped Lanthanum and Bismuth Cuprate Superconductors Using Resonant Inelastic X-Ray Scattering
similarity 0.96Abhishek Nag et al.
Source status unknown — claims are unverified
Effects of out-of-plane disorder on the nodal quasiparticle and superconducting gap in single-layer Bi2Sr1.6L0.4CuO6+δ (L=La,Nd,Gd)
similarity 0.96M. Hashimoto et al.
Source status unknown — claims are unverified
Coexistence of Competing Orders with Two Energy Gaps in Real and Momentum Space in the High Temperature Superconductor Bi2Sr2−xLaxCuO6+δ
similarity 0.96J.-H. Ma et al.
Source status unknown — claims are unverified
Doping dependence of the electron-phonon coupling in two families of bilayer superconducting cuprates
similarity 0.96Yingying Peng et al.
Source status unknown — claims are unverified
Oxygen doping Bi2Sr2CaCu2O8+δ superconductors: Variations in the BiO-layer electronic states determined by scanning tunneling microscopy
similarity 0.96Zhe Zhang & Charles M. Lieber
Source status unknown — claims are unverified