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Peak effect in surface resistance at microwave frequencies in Dy-123 thin films |
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| Authors: | A R Bhangale T Banerjee P Raychaudhuri S S Bhagwat S P Pai J John V C Bagwe V S Shirodkar R Pinto |
| Institution: | (1) Electronics Department, K.C. College, 400 020 Mumbai, India;(2) Tata Institute of Fundamental Research, Homi Bhabha Road, 400 005 Mumbai, India;(3) School of Physics and Astronomy, University of Birmingham, B15 2TT Edgbaston, Birmingham, UK;(4) Department of Physics, Institute of Science, 400 032 Mumbai, India |
| Abstract: | A pronounced peak in the microwave (at frequency 9.55 GHz) surface resistance, R s vs. T plot (where T is the temperature) has been observed in epitaxial DyBa2Cu3O7−y superconducting thin films in magnetic fields (parallel to c-axis) in the range 2 to 8 kOe, and temperatures close to the superconducting transition temperature T c(H). Our data suggest that the nature of peaks observed in the two films is different, thereby indicating different defect structures in the films. |
| Keywords: | Peak effect flux line lattice microwave surface resistance |
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