Ultrasonic attenuation measurements on thallium-based high-temperature superconductors
D. O. Pederson, A. El Ali, Z. Z. Sheng, A. M. Hermann
DOI 10.1103/PhysRevB.40.7313 · Physical Review B
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Abstract
We report ultrasonic attenuation measurements on thallium-based high-temperature superconductors with a transition temperature near 110 K. Measurements were carried out between 300 K and liquid-nitrogen temperature. Several peaks were observed with one peak appearing near Tc. At the critical temperature, no sharp drop was noted within our experimental resolution. The attenuation increases with decreasing temperature below Tc. Similar behavior of attenuation measured in Y-based compounds was also observed.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Tl2Ca1Ba2Cu2O Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 110 | Pressure not reported | zero_resistance |
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90 | Pressure not reported | unknown |
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