| NON-EQUILIBRIUM MICROWAVE RESPONSE OF Yba2Cu3O7-δ GRANULAR THIN FILMS UNDER MAGNETIC FIELDS |
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| 引用本文： | ABBAS A.ESSA,徐克西,周世平,鲍家善.NON-EQUILIBRIUM MICROWAVE RESPONSE OF Yba2Cu3O7-δ GRANULAR THIN FILMS UNDER MAGNETIC FIELDS[J].物理学报(海外版),1999,8(11):860-868. |
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| 作者姓名： | ABBAS A.ESSA 徐克西 周世平 鲍家善 |
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| 作者单位： | Physics Department, Shanghai University, Shanghai 201800, China |
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| 基金项目： | Project supported by the Nature Science Foundation of Shanghai Education Committee, China (Grant No. 97AJ08). |
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| 摘 要： | Microwave responses of YBa2Cu3O7-δ(YBCO) granular film have been studied at the microwave frequency of 30.5 GHz. In the absence of a magnetic field the dependence of a normal microwave response on the bias current is observed at a temperature close to Tc. When a magnetic field ranged from 5.0 mT to 33.0 mT is applied, the responses broaden and shift toward a lower temperature. In the superconducting state, the responses were found to be highly dependent on the magnetic field. For the current equal to 5.0mA and a magnetic field above 17.0mT the response increases and did not vanish even at a very low temperature, the fact is believed to be correlated to the anisotropic character of the structure.
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| 收稿时间： | 1999-03-22 |
NON-EQUILIBRIUM MICROWAVE RESPONSE OF Yba2Cu3O7-$\delta$ GRANULAR THIN FILMS UNDER MAGNETIC FIELDS |
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| Institution: | Physics Department, Shanghai University, Shanghai 201800, China |
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| Abstract: | Microwave responses of YBa2Cu3O7-$\delta$(YBCO) granular film have been studied at the microwave frequency of 30.5 GHz. In the absence of a magnetic field the dependence of a normal microwave response on the bias current is observed at a temperature close to Tc. When a magnetic field ranged from 5.0 mT to 33.0 mT is applied, the responses broaden and shift toward a lower temperature. In the superconducting state, the responses were found to be highly dependent on the magnetic field. For the current equal to 5.0mA and a magnetic field above 17.0mT the response increases and did not vanish even at a very low temperature, the fact is believed to be correlated to the anisotropic character of the structure. |
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