Far infrared optical absorption study and characterization of Y1Ba2Cu3Oδ/ Pr0.5Y0.5Ba2Cu3O7-δ superlattices

T. R. Yang, H. C. Yang, H. E. Horng, Y. K. Chyan

Research output: Contribution to journalArticle

Abstract

We report infrared reflection measurements on Y1Ba2Cu3O7-δ/Pr 0.5Y0.5Ba2Cu3O7-δ (60Å/60Å, 16 layers and 60Å/24Å, 16 layers on SrTiO3 (100) substrate) high Tc superconducting superlattice films. We measured absorption spectrum of these films from 30 - 700 cm-1(3.7 - 66.9 meV) and 80 - 300 K. These films showed resistive superconducting transitions with an on set at 80 K. Some of the phonons are smear out because of strong electron-phonon mediation. The appearance of vibration modes are around 547, 361, 279, 172, 150, 125 cm-1 at 80 K. Some contribution and interaction between layers were observed from measured spectra. The different configuration of interlayer thickness of these superlattices have 1-2 cm-1 peaks shift in spectra. The dielectric and electron-phonon behaviors due to interaction of superlattice layers will go further studies.

Original languageEnglish
Pages (from-to)1031-1032
Number of pages2
JournalPhysica C: Superconductivity and its applications
Volume282-287
Issue numberPART 2
DOIs
Publication statusPublished - 1997 Aug

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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