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.
Received: 22 March 1999
Revised: 15 June 1999
Accepted manuscript online:
(Granular, melt-textured, amorphous, and composite superconductors)
Fund: Project supported by the Nature Science Foundation of Shanghai Education Committee, China (Grant No. 97AJ08).
Cite this article:
ABBAS A.ESSA, XU KE-XI (徐克西), ZHOU SHI-PING (周世平), BAO JIA-SHAN (鲍家善) NON-EQUILIBRIUM MICROWAVE RESPONSE OF Yba2Cu3O7-$\delta$ GRANULAR THIN FILMS UNDER MAGNETIC FIELDS 1999 Acta Physica Sinica (Overseas Edition) 8 860
Development of 1.3GHz high-T-c rf SQUID Liu Xin-Yuan (刘新元), Xie Fei-Xiang (谢飞翔), Meng Shu-Chao (孟树超), Dai Yuan-Dong (戴远东), Li Zhuang-Zhi (李壮志), Ma Ping (马平), Yang Tao (杨涛), Nie Rui-Juan (聂瑞娟), Wang Fu-Ren (王福仁), . Chin. Phys. B, 2004, 13(1): 100-104.
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