Hydrostatic pressure on HgBa2CaCu2O 6+δ and HgBa2Ca2Cu3O 8+δ

F. Chen, L. Gao, R. L. Meng, Y. Y. Xue, C. W. Chu

研究成果: Article同行評審

4 引文 斯高帕斯(Scopus)

摘要

The superconducting transition temperature Tc and its pressure dependence dTc/dP of HgBa2CaCu2O 6+δ (Hg-1212) and HgBa2Ca2Cu 3O8+δ (Hg-1223) were measured up to 17 kbar. T c increases with pressure approximately linearly for both compounds before oxidation. However, the nonlinearity in the Tc-P correlation shows up after oxidation in both compounds. For Hg-1212, the average dT c/dP decreases as oxygen doping increases, while it increases in Hg-1223. These observations are in conflict with the modified pressure-induced charge-transfer model, but might be attributed to the possible existence of fine electronic structure. These observations suggest that a Tc much higher than 140 K might be achievable in Hg-1223 by means of higher physical or chemical pressure.

原文English
頁(從 - 到)6941-6943
頁數3
期刊Journal of Applied Physics
76
發行號10
DOIs
出版狀態Published - 1994

All Science Journal Classification (ASJC) codes

  • 物理與天文學 (全部)

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