Tunneling measurements of the energy gap in the high-Tc superconductor Tl2Ba2Ca2Cu3O10+δ
S. Vieira, J. G. Rodrigo, M. A. Ramos, K. V. Rao, Y. Makino
DOI 10.1103/PhysRevB.40.11403 · Physical Review B
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Abstract
The tunneling I-V characteristic curves have been studied for a ceramic sample of Tl2Ba2Ca2Cu3O10+δ using a scanning tunneling microscope. We have found two kinds of curves which are interpreted as due to the tunneling in superconductor–insulator–normal-metal and superconductor-insulator-superconductor junctions. Although the Tc of the intervenient superconducting regions are unknown, values of 2Δ/kBTc are around the BCS value 3.5 using the Tc obtained by resistance measurements.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Tl2Ba2Ca2Cu3O10+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 105 | Pressure not reported | zero_resistance |
| Tl2Ba2Ca2Cu3O10+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 110 | Pressure not reported | midpoint |
| Tl2Ba2Ca2Cu3O10+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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