| Y1-xCaxBa2Cu3O6系统中空穴掺杂诱导的绝缘体-金属转变和超导电性 |
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| 引用本文： | 赵勇,诸葛向彬,何业冶. Y1-xCaxBa2Cu3O6系统中空穴掺杂诱导的绝缘体-金属转变和超导电性[J]. 物理学报, 1992, 41(7): 1151-1156 |
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| 作者姓名： | 赵勇 诸葛向彬 何业冶 |
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| 作者单位： | (1)浙江大学物理系,杭州310027; (2)中国科学院低温技术实验中心,北京100080 |
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| 摘 要： | 本文报道利用Ca部分取代Y的方法,将空穴引入绝缘的YBa2Cu3O6系统中,使其发生由绝缘体到超导体的转变,并通过研究其电子输运性质、磁性质,以及晶体结构的变化,揭示了具有适当载流子浓度的CuO面是维持高Tc超导电性的重要条件。关键词：
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| 关 键 词： | YCaBaCuO 空穴 掺杂 超导电性 |
| 收稿时间： | 1991-08-16 |
INSULATOR-METAL TRANSITION AND SUPERCONDUCTI- VITY INDUCED BY HOLE DOPING IN Y1-xCaxBa2Cu3O6 SYSTEM |
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| ZHAO YONG,ZHUGE XIANG-BIN and HE YE-YE. INSULATOR-METAL TRANSITION AND SUPERCONDUCTI- VITY INDUCED BY HOLE DOPING IN Y1-xCaxBa2Cu3O6 SYSTEM[J]. Acta Physica Sinica, 1992, 41(7): 1151-1156 |
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| Authors: | ZHAO YONG ZHUGE XIANG-BIN HE YE-YE |
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| Abstract: | By the substitution of Ca for Y, the holes are introduced into the insulating host material YBa2Cu3O6, and an insulator-to-metal transition, as well as superconductivity at 60K, is observed. The measurements of crystal structure, resistivity and ac susceptibility are performed, and the results indicate that the CuO planes with sufficient carrier concentration is the important condition for sustaining the high-Tc superconductivity. |
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