| 压力对HgBa2Ca2Cu3O8+y超导转变温度的影响 |
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| 引用本文： | 韩翠英,邵惠民.压力对HgBa2Ca2Cu3O8+y超导转变温度的影响[J].高压物理学报,1996,10(1):6-11. |
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| 作者姓名： | 韩翠英 邵惠民 |
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| 作者单位： | 中国科学院物理研究所，南京大学固体微结构物理实验室 |
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| 摘 要： | 利用低温超高压装置，测量了Hg系样品HgBa2Ca2Cu3O8+y（Hg-1223）超导转变温度Tc在压力作用下的增强效应。压力最高达7.8 GPa，超导起始转变温度常压下为130 K，加压到5.4 GPa时获得最高温度为140 K。在5.4 GPa以下获得dTc/dp为1.85 K/GPa。用压力作用下氧原子位置的改变使载流子浓度提高和CuO2面间的耦合作用来解释高温超导的压力效应。
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| 关 键 词： | 低温 超高压 Hg-1223 |
| 收稿时间： | 1995-05-08; |
S PRESSURE EFFECT ON THE CRITICAL TEMPERATURE OF HgBa 2Ca 2Cu 3O 8+y |
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| Han Cuiying,Shao Huimin a,Lin Wei,Song Wei,Jia Shunlian,Yao Xixian a.S PRESSURE EFFECT ON THE CRITICAL TEMPERATURE OF HgBa 2Ca 2Cu 3O 8+y[J].Chinese Journal of High Pressure Physics,1996,10(1):6-11. |
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| Authors: | Han Cuiying Shao Huimin a Lin Wei Song Wei Jia Shunlian Yao Xixian a |
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| Affiliation: | 1. Institute of Physics ASC, Beijing 100080, China;2. Department of Physics, Nanjing University, Nanjing 210008, China |
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| Abstract: | The critical temperature T c of the superconductor HgBa 2Ca 2Cu 3O 8+ y (Hg 1223) sample is determined by four probe resistivity measurement under quasi hydrostatic pressure up to 7.8GPa. T c increases from 130K at ambient pressure to 141K under a pressure up to 5.4GPa.d T c/d p =1.85K/GPa at pressures below 5 4GPa.The moving of some oxygen atoms and the coupling between CuO 2 planes were used to analysed the pressure effect on T c of the high T c superconductors. |
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| Keywords: | low temperature high pressure Hg 1223 |
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