Surface resistance of thin Perovskite films - High-temperature superconductors and giant magnetoresistance manganites

S. E. Lofland, M. Dominguez, S. D. Tyagi, S. M. Bhagat, M. C. Robson, C. Kwon, Z. Trajanovic, I. Takeuchi, R. Ramesh, T. Venkatesan

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

We present a systematic study of the surface resistance of perovskite thin films and bulk samples at microwave frequencies. The d.c. resistivity p of the various samples spans three orders of magnitude. For bulk samples, we obtain the usual ρ1/2 dependence of Rs. For ρ < 1 μΩ cm, Rs displays conventional behavior, i.e. Rs α ρ. However, for ρ > 1 μΩ cm, Rs is not proportional to ρ but to the conductivity σ. Using this fact, we have made the first direct observation of a peak in σ1, just below Tc in a-axis films of YBa2Cu3O7.

Original languageEnglish (US)
Pages (from-to)256-261
Number of pages6
JournalThin Solid Films
Volume288
Issue number1-2
StatePublished - Nov 15 1996
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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