Far-infrared spectra of polycrystalline Ba2YCu3O9-

G. A. Thomas, H. K. Ng, A. J. Millis, R. N. Bhatt, R. J. Cava, E. A. Rietman, D. W. Johnson, G. P. Espinosa, J. M. Vandenberg

Research output: Contribution to journalArticlepeer-review

64 Scopus citations


We present far-infrared reflectivity spectra of seven samples of ceramic superconductors in the Ba-Y-Cu-O system with transition temperatures near 93 K. We find superconducting gap structures on the basis of which we estimate the ratio of twice the average gap to the transition temperature to be consistent with 3.5, but possibly higher. Questions of normal-state characterization preclude a definitive analysis.

Original languageEnglish (US)
Pages (from-to)846-849
Number of pages4
JournalPhysical Review B
Issue number1
StatePublished - 1987
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics


Dive into the research topics of 'Far-infrared spectra of polycrystalline Ba2YCu3O9-'. Together they form a unique fingerprint.

Cite this