| YBa2Cu3O7-δ薄膜热激发磁通蠕动研究 |
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| 引用本文： | 张贻瞳,金新,张长贵,金继荣,姚希贤,吉争鸣,孙志坚,杨森祖.YBa2Cu3O7-δ薄膜热激发磁通蠕动研究[J].物理学报,1993,42(7):1174-1178. |
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| 作者姓名： | 张贻瞳 金新 张长贵 金继荣 姚希贤 吉争鸣 孙志坚 杨森祖 |
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| 作者单位： | (1)南京大学物理系,南京,210008; (2)南京大学信息物理系,南京,210008 |
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| 基金项目： | 国家超导技术联合研究开发中心基金 |
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| 摘 要： | 本文选择两块零电阻温度分别为82K和71K超导性能不同的薄膜样品,同步进行了电阻在外磁场中展宽的测量,并用Palstra所提出的Arrhenius定律研究两样品热激活能的差别。实验发现样品热激活能随磁场增加线性下降。由测量结果推出的不可逆线仍有B*-(1-T*/Tc)3/2形式。
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| 收稿时间： | 7/9/1990 12:00:00 AM |
A STUDY ON MAGNETIC THERMALLY FLUX CREEP OF YBa2Cu3O7-δ THIN FILM |
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| ZHANG YI-TONG,JIN XIN,ZHANG CHANG-GUI,JIN JI-RONG,YAO XI-XIAM,JI ZHENG-MING,SUN ZHI-JIAN and YANG SEN-ZU.A STUDY ON MAGNETIC THERMALLY FLUX CREEP OF YBa2Cu3O7-δ THIN FILM[J].Acta Physica Sinica,1993,42(7):1174-1178. |
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| Authors: | ZHANG YI-TONG JIN XIN ZHANG CHANG-GUI JIN JI-RONG YAO XI-XIAM JI ZHENG-MING SUN ZHI-JIAN and YANG SEN-ZU |
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| Abstract: | Two high Tc superconductor YBa2Cu3O7-δ thin films, the zero resistance temperature of which were 82K and 71K respectively, were selected for measurement about resistance broadening. The difference in thermal activation energy of the two samples was analyzed with Arrhenius law auggested by Palstra We found that the activation energy decreased depending upon increasing magnetic field. The irreversibi-lity line was B*-(1-T*/Tc)3/2 deduced from our data. |
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