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Josephson plasma resonance in underdoped Bi2Sr2CaCu2O8+δ crystals

  • S. Colson
  • , C. J. Van Der Beek
  • , M. Konczykowski
  • , M. B. Gaifullin
  • , Y. Matsuda
  • , P. Gierłowski
  • , Li Ming Li
  • , P. H. Kes

Research output: Contribution to journalArticlepeer-review

Abstract

Using two methods, the bolometric method and the cavity perturbation technique, we have observed the Josephson plasma resonance (JPR) in heavily underdoped Bi2Sr2CaCu2O8+δ crystals (Tc = 69.4 K) in the Bragg-glass phase in different magnetic fields. From these data, we obtain the penetration depth along the c-axis, λc(0) = 229 ± 10 μm. The JPR results yielded an experimental estimate of the wandering length rw of vortex pancakes in the samples (rw ≈ 300-550 nm at 52 K depending on the magnetic field applied). We observe an increase of rw with increasing applied dc magnetic field applied.

Original languageEnglish
Pages (from-to)236-239
Number of pages4
JournalPhysica C: Superconductivity and its Applications
Volume369
Issue number1-4
DOIs
Publication statusPublished - 15 Mar 2002

Keywords

  • Bi:2212
  • Josephson plasma resonance
  • Penetration depth
  • Vortex wandering length

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