Far-infrared transmission spectra of high Tc (Y0.6Ba0.4)2CuO4-y superconductors

T. H.H. Vuong, D. C. Tsui, V. J. Goldman, P. H. Hor, R. L. Meng, C. W. Chu

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We have measured the far-infrared transmission spectra of two samples of the YBaCuO superconductor which have transition temperatures of 98K and 86K respectively. Both samples showed absorption peaks at 110 cm-1, 141 cm-1, 173 cm-1, 209 cm-1, 234 cm-1, 273 cm-1, and 328 cm-1, in the frequency range of 50 - 340 cm-1, in both the normal and the superconducting states. The peak frequencies did not vary with temperature. The linewidths were smaller for the sample with Tc = 98 K. For one sample it was estimated from the temperature dependence of the transmission spectra that the superconducting energy gap was 2δ ≅ 3.3 kTc.

Original languageEnglish
Pages (from-to)525-529
Number of pages5
JournalSolid State Communications
Issue number6
Publication statusPublished - 1987 Aug

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry


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