Effects of out-of-plane disorder on the nodal quasiparticle and superconducting gap in single-layer Bi2Sr1.6L0.4CuO6+δ (L=La,Nd,Gd)
M. Hashimoto, T. Yoshida, A. Fujimori, D. H. Lu, Z.-X. Shen, M. Kubota, K. Ono, M. Ishikado, K. Fujita, S. Uchida
DOI 10.1103/PhysRevB.79.144517 · Physical Review B
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Abstract
How out-of-plane disorder affects the electronic structure has been investigated for the single-layer cuprates Bi2Sr1.6L0.4CuO6+δ (L=La, Nd, and Gd) by angle-resolved photoemission spectroscopy. We have observed that, with increasing disorder, while the Fermi-surface shape and band dispersions are not affected, the quasiparticle width increases, the antinodal gap is enhanced and the superconducting gap in the nodal region is depressed. The results indicate that the superconductivity is significantly depressed by out-of-plane disorder through the enhancement of the antinodal gap and the depression of the superconducting gap in the nodal region.
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 unresolved | unknown |
| Bi2Sr1.6Nd0.4CuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 29 | Pressure unresolved | unknown |
| Bi2Sr1.6La0.2Gd0.2CuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 27 | Pressure unresolved | 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 unresolved | 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 unresolved | unknown |
| Bi2Sr1.6Nd0.4CuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 29 | Pressure unresolved | unknown |
| Bi2Sr1.6La0.2Gd0.2CuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 27 | Pressure unresolved | 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 unresolved | unknown |
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