Size effect for the Josephson plasma resonance in high-Tc superconductors

Tomio Koyama

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


We formulate a theory for the size effect for the longitudinal Josephson plasma oscillations in a 1D intrinsic Josephson-junction array (IJJA) with a finite in-plane area. The charging energy of the superconducting layers causes the size-dependence of the plasma frequency. The size effect can be described as a quantum correction for the superconducting phase differences in this system. The plasma oscillations become unstable as the in-plane area decreases. It is predicted that the resonant state in which the single-particle plasma excitation resonates with thermally-excited plasma oscillations appears in an IJJA with a small in-plane area.

Original languageEnglish
Pages (from-to)3689-3695
Number of pages7
Journaljournal of the physical society of japan
Issue number11
Publication statusPublished - 2000 Nov


  • High-T cuprates
  • Intrinsic Josephson effect
  • Josephson plasma resonance

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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