Discriminating the Superconducting Gap from the Pseudogap in Bi2Sr2CaCu2O8+δ by Interlayer Tunneling Spectroscopy
Minoru Suzuki, Takao Watanabe
DOI 10.1103/PhysRevLett.85.4787 · 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
Tunneling spectroscopy using a very thin stack of intrinsic Josephson junctions has revealed that the superconducting gap is definitely different from the pseudogap in the Bi2Sr2CaCu2O8+δ system. In the underdoped region, the conductance peak arising from the superconducting gap is independently observed in the dI/dV−V curve and its position is much lower than that of the pseudogap. Near the optimum doping level and in the overdoped region, both peaks are located in close proximity. These findings are in conflict with a previous understanding of the pseudogap.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 85 | Pressure not reported | unknown |
Similar papers
Interlayer tunneling spectroscopy of Bi2Sr2CaCu2O8+δ: A look from inside on the doping phase diagram of high-Tc superconductors
similarity 0.97V. M. Krasnov
Source status unknown — claims are unverified
Temperature and doping dependence of the Bi2.1Sr1.9CaCu2O8+δ pseudogap and superconducting gap
similarity 0.96Azusa Matsuda et al.
Source status unknown — claims are unverified
Transport properties of high-Tc Bi2Sr2CaCu2O8+δ crystals near the superconducting transition
similarity 0.96Y. M. Wan et al.
Source status unknown — claims are unverified
Coexistence of a pseudogap and a superconducting gap for the high−Tc superconductor La2−xSrxCuO4 studied by angle-resolved photoemission spectroscopy
similarity 0.95T. Yoshida et al.
Source status unknown — claims are unverified
Insensitivity of the Superconducting Gap to Variations in the Critical Temperature of Zn-Substituted Bi2Sr2CaCu2O8+δ Superconductors
similarity 0.95Y. Lubashevsky et al.
Source status unknown — claims are unverified
Suppressed superconductivity of the surface conduction layer in Bi2Sr2CaCu2O8+x single crystals probed by c-axis tunneling measurements
similarity 0.95Nam Kim et al.
Source status unknown — claims are unverified