Effects of dc transport current on low-field microwave-absorption in ceramic superconducting YBCO samples
The effects of dc transport current on low-field microwave absorption have been investigated systematically on bulk ceramic YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub>-δ samples. At a fixed temperature T, the critical current Ic (T) at which the electron paramagnet...
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| Online Access: | http://hdl.handle.net/2047/d20002207 |
| Summary: | The effects of dc transport current on low-field microwave absorption have been investigated systematically on bulk ceramic YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7</sub>-δ samples. At a fixed temperature T, the critical current Ic (T) at which the electron paramagnetic resonance (EPR) signal vanishes varies linearly with T. 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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