Superconductivity above 250 K in Tl1.8Ba2.0Ca2.6Cu3.0O10+dat high pressure

Автор(и)

  • C. Y. Han State Key Laboratory of Magnetism, Institute of Physics Chinese Academy of Sciences, Beijing 100080, China
  • B. Yin State Key Laboratory of Magnetism, Institute of Physics Chinese Academy of Sciences, Beijing 100080, China
  • D. S. Tang State Key Laboratory of Magnetism, Institute of Physics Chinese Academy of Sciences, Beijing 100080, China
  • W. Lin Changsha Research Institute of Mining and Metallurgy, Changsha, Hunan 410012, China
  • Y. S. Wu Changsha Research Institute of Mining and Metallurgy, Changsha, Hunan 410012, China

DOI:

https://doi.org/10.1063/1.593590

Ключові слова:

PACS: 74.72.Fg, 74.62.Fj

Анотація

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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Опубліковано

1998-04-10

Як цитувати

(1)
Han, C. Y.; Yin, B.; Tang, D. S.; Lin, W.; Wu, Y. S. Superconductivity above 250 K in Tl1.8Ba2.0Ca2.6Cu3.0O10+dat High Pressure. Fiz. Nizk. Temp. 1998, 24, 305-308.

Номер

Том 24 № 4 (1998)

Розділ

Надпровідність, зокрема високотемпературна