Electron-tunneling measurements of low-Tc single-layer Bi2+xSr2−yCuO6+δ: Evidence for a scaling disparity between superconducting and pseudogap states
Th. Jacobs, S. O. Katterwe, H. Motzkau, A. Rydh, A. Maljuk, T. Helm, C. Putzke, E. Kampert, M. V. Kartsovnik, V. M. Krasnov
DOI 10.1103/PhysRevB.86.214506 · 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 experimentally study intrinsic tunneling and high magnetic field (up to 65 T) transport characteristics of the single-layer cuprate Bi2+xSr2−yCuO6+δ, with a very low superconducting critical temperature Tc≲4 K. It is observed that the superconducting gap, the collective bosonic mode energy, the upper critical field, and the fluctuation temperature range are scaling down with Tc, while the corresponding pseudogap characteristics remain the same as in high-Tc cuprates with 20 to 30 times higher Tc. The observed disparity of the superconducting and pseudogap scales clearly reveals their different origins.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Bi2+xSr2-yCuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4 | Pressure not reported | onset |
| Bi2+xSr2-yCuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.5 | Pressure not reported | unknown |
| Bi2+xSr2-yCuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 4.3 | Pressure not reported | unknown |
| Bi2+xSr2-yCuO6+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 3.8 | Pressure not reported | unknown |
Similar papers
Superconducting gap and pseudogap in near-optimally doped Bi2Sr2−xLaxCuO6+δ
similarity 0.96J. K. Ren et al.
Source status unknown — claims are unverified
Critical Point and the Nature of the Pseudogap of Single-Layered Copper-Oxide Bi2Sr2−xLaxCuO6+δ Superconductors
similarity 0.95Guo-qing Zheng et al.
Source status unknown — claims are unverified
Transport signatures of the pseudogap critical point in the cuprate superconductor Bi2Sr2−xLaxCuO6+δ
similarity 0.95M. Lizaire et al.
Source status unknown — claims are unverified
Interplay of doping and structural modulation in superconducting Bi2Sr2−xLaxCuO6+δ thin films
similarity 0.95Z. Z. Li et al.
Source status unknown — claims are unverified
In-plane current-voltage characteristics and oscillatory Josephson-vortex flow resistance in La-free Bi2+xSr2−xCuO6+δ single crystals in high magnetic fields
similarity 0.95S. I. Vedeneev & D. K. Maude
Source status unknown — claims are unverified
Low anisotropy of the upper critical field in a strongly anisotropic layered cuprate Bi2.15Sr1.9CuO6+δ: Evidence for a paramagnetically limited superconductivity
similarity 0.94S. O. Katterwe et al.
Source status unknown — claims are unverified