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Peak effect at microwave frequencies in swift heavy ion irradiated YBa2Cu3O7-δ thin films

  • Physics Of Vortex State
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Abstract

The vortex dynamics at microwave frequencies in YBa2Cu3O7-δ (YBCO) films have been studied. We observe a peak in the microwave (4.88 and 9.55 GHz) surface resistance in some films in magnetic fields up to 0.8 T. This is associated with the ‘peak-effect’ phenomenon and reflects the order-disorder transformation of the flux line lattice near the transition temperature. Introduction of artificial pinning centers like columnar defects created as a result of irradiation with 200 MeV Ag ion (at a fluence of 4×1010 ions/cm2) leads to the suppression of the peak in films previously exhibiting ‘peak effect’.

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Authors and Affiliations

  1. Tata Institute of Fundamental Research, Homi Bhabha Road, 400 005, Mumbai, India

    Tamalika Banerjee, S P Pai & R Pinto

  2. Department of Physics, Institute of Science, 400 032, Mumbai, India

    Avinash Bhangale

  3. Aruna Asaf Ali Marg, Nuclear Science Centre, 110 067, New Delhi, India

    D Kanjilal

Authors
  1. Tamalika Banerjee
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  2. Avinash Bhangale
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  3. D Kanjilal
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  4. S P Pai
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  5. R Pinto
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Banerjee, T., Bhangale, A., Kanjilal, D. et al. Peak effect at microwave frequencies in swift heavy ion irradiated YBa2Cu3O7-δ thin films. Pramana - J Phys 58, 949–954 (2002). https://doi.org/10.1007/s12043-002-0198-x

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  • DOI: https://doi.org/10.1007/s12043-002-0198-x

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