| Yba2Cu3O7-δ不可逆线与钉扎势的关联 |
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| 引用本文： | 金新,张贻瞳,陆瑞熙,姚希贤,刘奉生,牟慧麟,吴晓祖,周廉.Yba2Cu3O7-δ不可逆线与钉扎势的关联[J].物理学报,1992,41(1):123-127. |
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| 作者姓名： | 金新 张贻瞳 陆瑞熙 姚希贤 刘奉生 牟慧麟 吴晓祖 周廉 |
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| 作者单位： | (1)南京大学物理系,固体微结构物理国家实验室,南京,210008; (2)西北有色金属研究院,宝鸡,721014 |
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| 摘 要： | 本文分别测量了熔融织构YBa2Cu3O7-δ高温超导体不可逆线与钉扎势U0,发现该样品的不可逆线在温区72—85K范围内呈指数形式B*-e(-T*/Tc)函数关系,而且在温度77K,不可逆线并不能与磁测量临界电流密度Jc=0相对应,我们认为高温超导体的不可逆线的函数形式与样品的钉扎势紧密关联。
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| 关 键 词： | 高Tc 超导体 不可逆线 钉扎效应 |
| 收稿时间： | 1991-01-31 |
CORRELATION BETWEEN THE IRREVERSIBILITY LINE AND PINNING POTENTIAL IN HIGH-Tc SUPERCONDUCTOR YBa2Cu3O7-δ |
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| JIN XIN,ZHANG YI-TONG,LU RUI-XI,YAO XI-XIAN,LIU FENG-SHENG,MOU HUI-LIN,WU XIAO-ZU and ZHOU LIAN.CORRELATION BETWEEN THE IRREVERSIBILITY LINE AND PINNING POTENTIAL IN HIGH-Tc SUPERCONDUCTOR YBa2Cu3O7-δ[J].Acta Physica Sinica,1992,41(1):123-127. |
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| Authors: | JIN XIN ZHANG YI-TONG LU RUI-XI YAO XI-XIAN LIU FENG-SHENG MOU HUI-LIN WU XIAO-ZU and ZHOU LIAN |
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| Abstract: | We have studied the irreversibility line and pinning potential U0 of high-Tc melt-textured YBa2Cu3O7-δ samples and found that the irreversibility line takes an exponential form B*-e(-T/Tc) over the temperature range of 72-85K, whereas the corresponding magnetic measurement at 77K gave a nonvanishing critical current density It is shown in the present paper that the functional expression of irreversibility line and pinning potential U0 of samples are closely associated. |
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