We present measurements of the microwave complex resistivity at 48 GHz in REBa2Cu3O7-δthin films (RE = Y, Sm) in moderate magnetic fields (μ0H < 0.8 T) and above 60 K. The measured complex resistivity gives valuable information for the study of vortex dynamics. We show that the field dependence of the microwave resistivity has rather different behaviours in YBa2Cu3O7-δand SmBa2Cu3O7-δ. By applying the conventional model of vortex motion, the data in SmBa2Cu3O7-δwould yield exotic behaviours for the vortex parameters. However, taking into account the enhanced field-induced change in quasiparticle density in a superconductor with lines of nodes in the gap, the vortex part of the response behaves similarly in YBa2Cu3O7-δand SmBa2Cu3O7-δ. © 2004 Elsevier B.V. All rights reserved.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering
Silva, E., Marcon, R., Muzzi, L., Pompeo, N., Fastampa, R., Giura, M., ... Cucolo, M. C. (2004). Mixed-state microwave resistivity in RE-BaCuO films. Physica C: Superconductivity and its Applications, 404(1-4), 350 - 353. https://doi.org/10.1016/j.physc.2003.11.031