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Effects of dc transport current on low‐field microwave absorption in ceramic superconducting YBCO samples

 

作者: H. How,   R. Karim,   R. Seed,   A. Widom,   C. Vittoria,   G. Balestrino,   P. Paroli,  

 

期刊: Journal of Applied Physics  （AIP Available online 1990）
卷期: Volume 67, issue 4  

页码: 2182-2185

 

ISSN:0021-8979

 

年代: 1990

 

DOI:10.1063/1.345561

 

出版商: AIP

 

数据来源: AIP

 

摘要:

The effects of dc transport current on low‐field microwave absorption have been investigated systematically on bulk ceramic YBa2Cu3O7−&dgr;samples. At a fixed temperatureT, the critical currentIc(T) at which the electron paramagnetic resonance (EPR) signal vanishes varies linearly withT. The EPR absorption characteristics obey a scaling rule in accordance with the flux creep model. A revised version of the flux creep model is also presented.

 

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