Superconductivity above 250 K in Tl1.8Ba2.0Ca2.6Cu3.0O10+dat high pressure
DOI (Low Temperature Physics):
https://doi.org/10.1063/1.593590Ключові слова:
PACS: 74.72.Fg, 74.62.FjАнотація
The pressure dependence of the superconducting transition temperature Tc(onset) of Tl1.8Ba2.0Ca2.6Cu3.0O10+d (Tl-2223) has been measured under quasi-hydrostatic pressure (QHP) up to 5.0 GPa. The Tc increases with increasing pressure at a relatively high rate and reaches a maximum at 255.4 K and pressure of about 4.3 GPa. This is the highest Tc yet observed for any high-Tc superconductor. The total change in Tc from ambient condition (Tc=129K) to the high pressure applied can be greater than 126 K. The Tc above 200 K was replicated several times in our experiments. The site of the maximum of Tcn and the value of dTc/dP=1.7K/GPa (at P = 0) agree with previous results obtained by D. Tristan Jover et al. [1] and J. G. Lin et al. [2], respectively.
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1998-04-10
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(1)
C. Y. Han, B. Yin, D. S. Tang, W. Lin, and Y. S. Wu, Superconductivity above 250 K in Tl1.8Ba2.0Ca2.6Cu3.0O10+dat high pressure, Low Temp. Phys. 24, (1998) [Fiz. Nizk. Temp. 24, 305-308, (1998)] DOI: https://doi.org/10.1063/1.593590.
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Надпровідність, зокрема високотемпературна
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